What is the torque on the pump bolts and how do i prime the pump

Removing and reinstalling the injector pump on a Hino Dutro SO5D engine requires careful attention to detail to avoid damaging the components. Here's a general guide on how to perform this task:
Tools and Materials Needed:

• Basic mechanic's toolset
• Replacement gaskets and seals (if necessary)
• Clean rags
• Diesel fuel-safe sealant (if necessary)
• Torque wrench

Procedure:

1. Prepare the Engine:
   • Park the vehicle on a flat, level surface and engage the parking brake.
   • Disconnect the negative terminal of the battery to prevent accidental starting.
   • Remove any components obstructing access to the injector pump, such as air intake hoses or covers.
2. Drain the Fuel System:
   • Relieve the fuel pressure in the system by loosening the fuel line fittings at the injector pump and allowing any residual pressure to escape.
   • Place a suitable container underneath to catch any spilled fuel.
   • Disconnect the fuel lines from the injector pump.
3. Disconnect Electrical Connections:
   • Disconnect any electrical connections, such as wiring harness connectors or sensor connections, from the injector pump.
4. Remove the Injector Pump:
   • Loosen and remove the mounting bolts securing the injector pump to the engine block. Take note of their locations and lengths as they may vary.
   • Carefully lift the injector pump away from the engine, ensuring not to damage any surrounding components.
   • Place the injector pump on a clean work surface.
5. Install the New Injector Pump:
   • Position the new injector pump in place on the engine block, aligning it with the mounting holes.
   • Install and tighten the mounting bolts to the specified torque settings. Refer to the manufacturer's specifications for the correct torque values.
   • Reconnect any electrical connections and fuel lines to the injector pump.
6. Reassemble Components:
   • Reinstall any components that were removed to access the injector pump, such as air intake hoses or covers.
   • Ensure all connections are properly secured and tightened.
7. Refill the Fuel System:
   • Prime the fuel system to remove any air by using the vehicle's priming mechanism or manually bleeding the system.
   • Check for any fuel leaks around the injector pump and fuel lines.
8. Test Operation:
   • Reconnect the negative terminal of the battery.
   • Start the engine and monitor for any abnormal noises or vibrations from the injector pump.
   • Verify that the engine runs smoothly and there are no fuel leaks.

First you need to know the diameter of the bolts and the type of thread ie 3/8 N/C or 5/16 N/F then look at the type of bolt ie plain steel or high tensile SAE grade 3, 4, or 6, once you know this go to a general purpose bolt torque chart, and derive the torque spec info.
If the water pump is cast iron use the full torque specification.
If the water pump is alloy then reduce the torque spec 10%

Below is an example of a general purpose bolt / nut torque chart

Could it be a F-150 instead?
Ford Engine Bolt Torque Chart Bolt Torque Spec Chart for Ford Engines

These specs are for stock-type bolts with light engine oil applied to the threads and the underside of the bolt head. Moly and other lubes offer reduced friction and increased bolt tension, which will affect the torque figure. If you use after-market performance bolts like ARP's, you should follow the recommended torque specifications.

260, 289, 302 Torque Spec.
Fastener Type Torque Spec Main cap bolts 60-70 ft-lbs Outer main cap bolts 35-40 ft-lbs. Connecting rod bolts (40-45 ft-lbs. for 289 HP & Boss 302) Cylinder head bolts 65-72 ft-lbs. Rocker arms 17-23 ft-lbs. Intake manifold bolts 23-25 ft-lbs Oil pump bolt 23-28 ft-lbs. Cam bolts 40-45 ft-lbs. Cam thrust plate bolts 8-10 ft-lbs. Harmonic damper bolts 70-90 ft-lbs. Flywheel / flex-plate bolts 75-85 ft-lbs. Pressure plate bolts 35 ft-lbs. Front cover bolts 12-15 ft-lbs. 351W Torque Spec.
Fastener Type Torque Spec Main cap bolts 95-105 ft-lbs Connecting rod bolts 40-45 ft-lbs. Cylinder head bolts 90-100 ft-lbs. Rocker arms 17-23 ft-lbs. Intake manifold bolts 23-25 ft-lbs. Oil pump bolts 23-28 ft-lbs. Cam bolts 40-45 ft-lbs. Cam thrust plate bolts 8-10 ft-lbs. Harmonic damper bolt 70-90 ft-lbs. Flywheel / flex-plate bolts 75-85 ft-lbs. Pressure plate bolts 35 ft-lbs. Front cover bolts 12-15 ft-lbs. 351C, 351M Torque Spec.
Fastener Type Torque Spec Main cap bolts 95-105 ft-lbs. Connecting rod bolts 40-45 ft-lbs. (45-50 ft-lbs. For Boss 351C) Cylinder head bolts 105 ft-lbs. (125 ft-lbs. For Boss 351C) Rocker arms (non-adjustable) Rocker arms (non-adjustable) 5/16in. intake manifold bolts 21-25 ft-lbs. 3/8in. intake manifold bolts 28-23 ft-lbs Oil pump bolt 25 ft-lbs. Cam bolts 40-45 ft-lbs. Cam thrust plate bolts 9-12 ft-lbs. Harmonic damper bolt 70-90 ft-lbs. Flywheel / flex-plate bolts 75-85 ft-lbs. Pressure plate bolts 35 ft-lbs. Front cover bolts 12-18 ft-lbs. 360, 390, 406, 427, 428FE Torque Spec.
Fastener Type Torque Spec Main cap bolts 95-105 ft-lbs. Crossbolts for 406-427 40 ft-lbs. Connecting rod bolts 40-45 ft-lbs. (53-58 ft-lbs. For 406 and 427) Cylinder head bolts 80-90 ft-lbs. (100-110 ft-lbs. For 1963-67 427) Rocker arm shaft bolts 40-45 ft-lbs. Intake manifold bolts 32-35 ft-lbs. Oil pump bolt 12-15 ft-lbs. Cam bolts 40-45 ft-lbs. Harmonic damper bolt 70-90 ft-lbs. Flywheel / flex-plate bolts 75-85 ft-lbs. Pressure plate bolts 35 ft-lbs. Front cover bolts 12-15 ft-lbs. 429-460 Torque Spec.
Fastener Type Torque Spec Main cap bolts 95-105 ft-lbs Connecting rod bolts 40-45 ft-lbs. Cylinder head bolts 140 ft-lbs. Rocker arms (non-adjustable) 18-22 ft-lbs. Intake manifold bolts 25-30 ft-lbs. Oil pump bolt 25 ft-lbs. Cam bolts 40-45 ft-lbs. Harmonic damper bolt 70-90 ft-lbs. Flywheel / flex-plate bolts 75-85 ft-lbs. Pressure plate bolts 35 ft-lbs. Front cover bolts 12-18 ft-lbs.

Ford Engine Bolt Torque Chart Bolt Torque Spec Chart for Ford Engines

These specs are for stock-type bolts with light engine oil applied to the threads and the underside of the bolt head. Moly and other lubes offer reduced friction and increased bolt tension, which will affect the torque figure. If you use after-market performance bolts like ARP's, you should follow the recommended torque specifications.

260, 289, 302 Torque Spec.
Fastener Type Torque Spec Main cap bolts 60-70 ft-lbs Outer main cap bolts 35-40 ft-lbs. Connecting rod bolts (40-45 ft-lbs. for 289 HP & Boss 302) Cylinder head bolts 65-72 ft-lbs. Rocker arms 17-23 ft-lbs. Intake manifold bolts 23-25 ft-lbs Oil pump bolt 23-28 ft-lbs. Cam bolts 40-45 ft-lbs. Cam thrust plate bolts 8-10 ft-lbs. Harmonic damper bolts 70-90 ft-lbs. Flywheel / flex-plate bolts 75-85 ft-lbs. Pressure plate bolts 35 ft-lbs. Front cover bolts 12-15 ft-lbs. 351W Torque Spec.
Fastener Type Torque Spec Main cap bolts 95-105 ft-lbs Connecting rod bolts 40-45 ft-lbs. Cylinder head bolts 90-100 ft-lbs. Rocker arms 17-23 ft-lbs. Intake manifold bolts 23-25 ft-lbs. Oil pump bolts 23-28 ft-lbs. Cam bolts 40-45 ft-lbs. Cam thrust plate bolts 8-10 ft-lbs. Harmonic damper bolt 70-90 ft-lbs. Flywheel / flex-plate bolts 75-85 ft-lbs. Pressure plate bolts 35 ft-lbs. Front cover bolts 12-15 ft-lbs. 351C, 351M Torque Spec.
Fastener Type Torque Spec Main cap bolts 95-105 ft-lbs. Connecting rod bolts 40-45 ft-lbs. (45-50 ft-lbs. For Boss 351C) Cylinder head bolts 105 ft-lbs. (125 ft-lbs. For Boss 351C) Rocker arms (non-adjustable) Rocker arms (non-adjustable) 5/16in. intake manifold bolts 21-25 ft-lbs. 3/8in. intake manifold bolts 28-23 ft-lbs Oil pump bolt 25 ft-lbs. Cam bolts 40-45 ft-lbs. Cam thrust plate bolts 9-12 ft-lbs. Harmonic damper bolt 70-90 ft-lbs. Flywheel / flex-plate bolts 75-85 ft-lbs. Pressure plate bolts 35 ft-lbs. Front cover bolts 12-18 ft-lbs. 360, 390, 406, 427, 428FE Torque Spec.
Fastener Type Torque Spec Main cap bolts 95-105 ft-lbs. Crossbolts for 406-427 40 ft-lbs. Connecting rod bolts 40-45 ft-lbs. (53-58 ft-lbs. For 406 and 427) Cylinder head bolts 80-90 ft-lbs. (100-110 ft-lbs. For 1963-67 427) Rocker arm shaft bolts 40-45 ft-lbs. Intake manifold bolts 32-35 ft-lbs. Oil pump bolt 12-15 ft-lbs. Cam bolts 40-45 ft-lbs. Harmonic damper bolt 70-90 ft-lbs. Flywheel / flex-plate bolts 75-85 ft-lbs. Pressure plate bolts 35 ft-lbs. Front cover bolts 12-15 ft-lbs. 429-460 Torque Spec.
Fastener Type Torque Spec Main cap bolts 95-105 ft-lbs Connecting rod bolts 40-45 ft-lbs. Cylinder head bolts 140 ft-lbs. Rocker arms (non-adjustable) 18-22 ft-lbs. Intake manifold bolts 25-30 ft-lbs. Oil pump bolt 25 ft-lbs. Cam bolts 40-45 ft-lbs. Harmonic damper bolt 70-90 ft-lbs. Flywheel / flex-plate bolts 75-85 ft-lbs. Pressure plate bolts 35 ft-lbs. Front cover bolts 12-18 ft-lbs.

Water Pump REMOVAL & INSTALLATION CAUTION
When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old. 1987-95 Vehicles EXCEPT 1995 VIN 1 ENGINE

1. Disconnect the negative battery cable.
2. Drain cooling system into a suitable container.
3. Remove the serpentine drive belt, as outlined in Section 1 of this manual. NOTE: On some engines, removing the alternator provides better clearance for removing the water pump. For alternator removal and installation procedures, please refer to Section 2 of this manual. Fig. 1: After removing the alternator, remove the brace
   
   
4. Unfasten the water pump pulley bolts, (long bolt removed through access hole provided in the body side rail), then remove the pulley. Fig. 2: Pull the water pump pulley from the pump
   
   
5. Disconnect the radiator and heater hoses from water pump. Fig. 3: Use a screwdriver to loosen the hose clamp screws, then disconnect the hoses from the water pump
   
   
6. For 1992-95 vehicles, remove the torque axis mount, as follows:
   1. Use a suitable engine support fixture and lifting bracket to raise the engine slightly to take the weight off of the engine mounts.
   2. Remove the through-bolt from the torque axis (front) engine mount.
   3. Lift the engine with the support fixture until the power steering reservoir touches the strut tower cross brace.
   4. Loosen the bottom two bolts on the torque axis (front) engine mount.
   5. Remove the A/C line clip and top two bolts on the torque axis engine mount, then remove the mount.
   6. Remove the 2 bolts and nut attaching the engine torque axis mount bracket assembly to the front of the engine. NOTE: On some engines, when you remove the 13mm bolts, coolant will flow from the bolt holes, so make sure to position a drain pan under the pump before unfastening the bolts.
      
7. Remove the water pump attaching bolts, then remove the water pump from the vehicle. Remove and discard the gasket. Thoroughly clean the gasket mating surfaces. Fig. 4: Unfasten the water pump mounting bolts (see arrows for locations of top bolts) . . .
   Fig. 5: . . . then remove the water pump from the engine
   Fig. 6: Use a gasket scraper to carefully clean the water pump's mating surface
   Fig. 7: You can also use Scotchbrite® or equivalent non-abrasive scouring pad to clean the water pump gasket mating surface
   Fig. 8: When using a scraper to clean the gasket mating surfaces, be careful not to gouge the engine and cause leaks
   Fig. 9: Exploded view of the water pump mounting - 1994 vehicle shown, others similar
   To install:
   
8. Apply a suitable sealant to the bolt threads. Fig. 10: Coat the bolt threads with a suitable sealing compound
   
   
9. Position a new gasket, then install the water pump to the engine and tighten the retaining bolts, as follows: Fig. 11: Place a new gasket on the water pump mounting surface
   
   1. For 1987-94 vehicles, tighten the long bolts to 29 ft. lbs. (39 Nm) and the short bolts to 97 inch lbs. (11 Nm).
   2. For 1995 vehicles, tighten the water pump-to-block bolts to 22 ft. lbs. (30 Nm) and the water pump-to-front cover bolts to 11 ft. lbs. (15 Nm), plus an additional 80°rotation.
10. For 1992-95 vehicles, install the torque axis mount, as follows:
    1. Attach the torque axis engine mount bracket assembly to the front of the engine using the 2 bolts and nut. Fig. 12: Install the torque axis engine mount bracket and secure with the 2 bolts and nut
       
       
    2. Replace the 2 upper bolts previously removed from the torque axis engine mount, and attach the mount and plastic clip for the A/C lines.
    3. Tighten the 2 lower bolts that were previously loosened on the torque axis engine mount. Fig. 13: Exploded view of the torque axis engine mount and tightening specifications
       
       
    4. Adjust the engine height to align the torque mount with the torque axis mount bracket.
    5. Insert the through-bolt, attach the retaining nut and tighten to the specifications shown in the accompanying figure. Remove the engine support and lifting fixture. Fig. 14: Insert the torque axis mount bracket through-bolt
       
    
    
11. Install the water pump pulley and secure with the retaining bolts.
12. Connect the radiator and heater hoses to the water pump.
13. Install the serpentine drive belt.
14. Connect the negative battery cable.
15. Fill cooling system and check for leaks. Start the engine and allow to come to normal operating temperature. Check for leaks and top-off the coolant.

GM Century/Lumina/Grand Prix/Intrigue 1997-2000 Water Pump - REMOVAL & INSTALLATION

3.1L and 3.4L (VIN E) Engines

1. Disconnect the negative battery cable.


2. Partially drain the cooling system into a suitable container.
3. Remove the drive belt guard.
4. Loosen the water pump pulley bolts before removing the drive belt. This should help keep the pulley from turning as the bolts are loosened.
5. Remove the drive belt. Please see .
6. Remove the water pump pulley bolts and remove the pulley.
7. Remove the water pump bolts and separate the pump from the engine front cover.

To install:



Fig. Exploded view of the water pump and front cover arrangement-3.1L and 3.4L (VIN E) engines

1. Clean all parts well. Use care when scraping gasket material from the front cover and the pump. Do not gouge aluminum parts. Clean the bolt threads well. The torque specification is low and if the bolt threads are dirty, an accurate torque is not possible and leaks are likely to develop.
2. Using a new gasket, install the water pump to the front cover. Install the cleaned and lightly lubricated water pump bolts. Torque to 89 inch lbs. (10 Nm).
3. Install the water pump pulley and bolts and torque to 18 ft. lbs. (25 Nm).
4. Install the remaining components in the reverse order of the removal process. When refilling the cooling system, use the proper mix of DEX-COOL® and water. Check for leaks.

3.4L (VIN X) Engine

1. Disconnect the negative battery cable.
2. Partially drain the cooling system into a suitable container.
3. Remove the coolant recovery reservoir.
4. Remove the drive belt. Please see .
5. Remove the pulley bolts and separate the pulley from the water pump.
6. Remove the water pump bolts and remove the pump from the engine.

Fig. Exploded view of the water pump mounting-3.4L (VIN X) engine
To install:

1. Clean all parts well. Use care when scraping gasket material from the front cover and the pump. Do not gouge aluminum parts. Clean the bolt threads well. The torque specification is low and if the bolt threads are dirty, an accurate torque is not possible and leaks are likely to develop.
2. Using a new gasket, install the water pump to the front cover. Install the cleaned and lightly lubricated water pump bolts. Torque to 89 inch lbs. (10 Nm).
3. Install the water pump pulley and bolts and finger-tighten the bolts.
4. Install the drive belt, then torque the pulley bolts to 18 ft. lbs. (25 Nm).
5. Install the remaining components in the reverse order of the removal process. When refilling the cooling system, use the proper mix of DEX-COOL® and water. Check for leaks.

Hope this help (remember comment and rated this).

GM Bonneville/Eighty Eight/LeSabre 1986-1999 Water Pump - REMOVAL & INSTALLATION

CAUTION When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.
1987-95 Vehicles
EXCEPT 1995 VIN 1 ENGINE

1. Disconnect the negative battery cable.
2. Drain cooling system into a suitable container.
3. Remove the serpentine drive belt, as outlined in of this repair guide.
   

On some engines, removing the alternator provides better clearance for removing the water pump. For alternator removal and installation procedures, please refer toin this repair guide.

1. Unfasten the water pump pulley bolts, (long bolt removed through access hole provided in the body side rail), then remove the pulley.

1. Disconnect the radiator and heater hoses from water pump.

1. For 1992-95 vehicles, remove the torque axis mount, as follows:
   1. Use a suitable engine support fixture and lifting bracket to raise the engine slightly to take the weight off of the engine mounts.
   2. Remove the through-bolt from the torque axis (front) engine mount.
   3. Lift the engine with the support fixture until the power steering reservoir touches the strut tower cross brace.
   4. Loosen the bottom two bolts on the torque axis (front) engine mount.
   5. Remove the A/C line clip and top two bolts on the torque axis engine mount, then remove the mount.
   6. Remove the 2 bolts and nut attaching the engine torque axis mount bracket assembly to the front of the engine.

On some engines, when you remove the 13mm bolts, coolant will flow from the bolt holes, so make sure to position a drain pan under the pump before unfastening the bolts.

1. Remove the water pump attaching bolts, then remove the water pump from the vehicle. Remove and discard the gasket. Thoroughly clean the gasket mating surfaces.

To install:

1. Apply a suitable sealant to the bolt threads.

1. Position a new gasket, then install the water pump to the engine and tighten the retaining bolts, as follows:

1. For 1987-94 vehicles, tighten the long bolts to 29 ft. lbs. (17 Nm) and the short bolts to 97 inch lbs. (11 Nm).
2. For 1995 vehicles, tighten the water pump-to-block bolts to 22 ft. lbs. (30 Nm) and the water pump-to-front cover bolts to 11 ft. lbs. (15 Nm), plus an additional 80° rotation.

1. For 1992-95 vehicles, install the torque axis mount, as follows:
   1. Attach the torque axis engine mount bracket assembly to the front of the engine using the 2 bolts and nut.
      
   2. Replace the 2 upper bolts previously removed from the torque axis engine mount, and attach the mount and plastic clip for the A/C lines.
   3. Tighten the 2 lower bolts that were previously loosened on the torque axis engine mount.
      
   4. Adjust the engine height to align the torque mount with the torque axis mount bracket.
   5. Insert the through-bolt, attach the retaining nut and tighten to the specifications shown in the accompanying figure. Remove the engine support and lifting fixture.
      
2. Install the water pump pulley and secure with the retaining bolts.
3. Connect the radiator and heater hoses to the water pump.
4. Install the serpentine drive belt.
5. Connect the negative battery cable.
6. Fill cooling system and check for leaks. Start the engine and allow to come to normal operating temperature. Check for leaks and top-off the coolant.

Hope this help (remember comment and rated this; TY for using Fixya.

This is straight from the book.
1. Remove oil pan.
2. Place large drain pan under engine
3. Unbolt the pump and exstension shaft from the rear main cap.
4. Lower same
5.Before reinstall prime the pump with engine oil. Pour oil in the exstension shaft while turning the pump.
6. Attach the pump, extension shaft and retainer to the main bearing cap.
(aling the pump with the dowel pins while you align the top end of the exstension shaft with the lower end of the oil pump drive.
Note when proper it fits into place easily.
7. install the pump mounting bolt and torque to spec.
8. Put the oil pan back on.

Removal
1. Support the vehicle on jack stands.
2. Disconnect the negative battery cable.
3. Drain the cooling system.
4. Remove water pump drive belt.
5. Disconnect the coolant hoses at the water pump.
6. Remove the water pump pulley bolts (long bolt removed through the access hole provided in
the body side rail), then remove the pulley.
7. Remove the torque axis mount. See TORQUE AXIS ENGINE MOUNT .
8. Remove the water pump attaching bolts and pump.
9. Clean all gasket mating surfaces.



Installation
1. Using a new gasket, install the water pump on the engine. Tighten the bolts to
specifications. See TORQUE SPECIFICATIONS .
2. Install the torque axis mount. See TORQUE AXIS ENGINE MOUNT .
3. Install the water pump pulley, then tighten the bolts to specifications. See TORQUE
SPECIFICATIONS .
4. Connect the coolant hoses onto the pump.
5. Install the water pump drive belt.
6. Fill the cooling system.
7. Add coolant supplement tablets.
8. Connect the battery cable, then start the engine.
9. Inspect for coolant leaks.

buy a new water pump, remove the radiator, remove the hose from the pump, remove the bolts that holds the pump, remove the old pump.

put the new gasket in the pump, dont forget to put a little bit of grease just to hold the gasket inplace. put the new pump, use the old bolts from where they are taken ( sometimes they are not of equal length ). if you have a torque wrench then use it to tighten the bolts with equal amounts of torque. put the hose back, put the radiator back, put water in the radiator, run the engine and look for some leaks at the new pump.

i hope i did it..

tnx, drcool