1987 Buick Century 2.5 serpentine belt diagram

1987 Chevrolet Celebrity Serpentine Belt Routing and Timing Belt Diagrams

I had to replace the belt on a 1988 Buick Century (similar to the Celebrity, but with a four-cylinder engine). I found that the only tool that could reach the belt tensioner in the limited space was a socket on a breaker bar; there wasn't room for a ratchet, and I couldn't get the correct angle for a wrench. There may be more room at the end of a V-6 The tensioner bolt is one of the larger metric sizes.

Clean all of the pulleys before installing the belt. Verify that the belt tensioner, water pump and alternator bearings are good - no rough spots or slop, and make sure the tensioner spring is good - the tensioner should require some force on the tensioner bolt head to move it, but it should not grind, hang, or have out-of-plane movement (perpendicular to the pulley rotation).

If everything looks good, you can install the belt. The grooved side is on the inside around the grooved pulleys, and the smooth side is on the inside around the smooth pulleys. Make sure the belt is correctly seated on the grooved pulleys. Save the tensioner pulley for last - use your tool to pull the tensioner in against the spring, and slip the belt on over the tensioner pulley. {CAUTION: do not let your fingers get between the belt and the tensioner pulley. If your tool slips at this point, you'd be in a world of hurt.} Take one more look to make sure the belt is centered on all of the pulleys, then slowly release the tool to apply tension to the belt.

Hello! Since I do not know which engine is in your vehicle I'll send both diagrams...#1 is the 4 cylinder with firing order; 1-3-4-2........Guru.....Saailer

#2 is the V6...









I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

GM Celebrity/Century/Ciera/6000 1982-1996 Repair Guide

Blower Motor - REMOVAL & INSTALLATION

This procedure is applicable for vehicles, with or without air conditioning.

1. Disconnect the negative cable at the battery.
2. On the 3.1L (VIN M) you will need to remove the serpentine belt and move the alternator aside.
3. For the 2.2L (VIN 4), disconnect the air inlet resonator, then remove the torque strut from the engine. Rotate the engine slightly forward.
4. Working inside the engine compartment, disconnect the blower motor electrical leads.
5. Remove the motor retaining bolts. If there is a hose disconnect it, then remove the blower motor.
   

To install:

1. Position the blower motor on it's mount.
2. Install the mounting bolts and tighten until snug.
3. Attach the drain hose if removed, then engage the electrical connection to the motor.
4. On the 2.2L (VIN 4), properly position the engine and install the torque strut to the engine. Connect the air inlet resonator.
5. On the 3.1L (VIN M), install the alternator, if removed. Install the serpentine belt.
6. Connect the negative battery cable, tighten the cable bolt to 11 ft. lbs. (15 Nm).
7. Reset the radio, clock and any other applicable electronic devices.

Hope helps (remember comment this)

Hello there
Here is the routing diagram and a good picture of the tentioner

A listing of serpentine belt diagrams can be found HERE. It will show you the location of the tensioner pulley, which must be loosened in order to remove and install the new belt. When the new belt is on, just readjust the tension via the tensioner pulley.

you can go to GM parts dept, with your vin # and they can print one out for you,it should be free.hope this helps.

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should be under hood. If not go to library and look for a chilton book on a gm car like this.

You should have a diagram of your serpentine belt routing located under the hood somewhere. The OEM usually places them near the top of the radiator.

i have an 88 buick century 4 cylinder can make you a diagram if you still need it e-mail me at [email protected] ty