99 blazer tighten windshield wiper arm

At the base of the wiper arm there is a plastic cap,pop this off ,underneath there is a nut that holds the arm in place ,if it gets loose the post will turn inside the blade.Just turn the wipers off and tighten the nuts with the blade in the parked position.

Open the cap at the end of the windshield wiper arm at the cowl of the Blazer.This will reveal the bolt that secures the wiper arm to the wiper linkage.unbolt the wiper arm using a 3/8-inch ratchet and socket. Place the bolt to the side, as you will reuse it later. Pull the wiper arm up at the blade so that the blade of the wiper is pointing into the air. Then pull at the base of the arm, wiggling it slightly. It's a keyed gear, so it may take a little bit of work to break it free, but with the right amount of wiggling, it will disengage. goodluck

Open the cap at the end of the windshield wiper arm at the cowl of the Blazer. This will reveal the bolt that secures the wiper arm to the wiper linkage.
Unbolt the wiper arm using a 3/8-inch ratchet and socket. Place the bolt to the side, as you will reuse it later.
Pull the wiper arm up at the blade so that the blade of the wiper is pointing into the air. Then pull at the base of the arm, wiggling it slightly. It's a keyed gear, so it may take a little bit of work to break it free, but with the right amount of wiggling, it will disengage.

Read more: How to Remove Chevy Blazer Windshield Wipers ' eHow.com http://www.ehow.com/how_6177302_remove-chevy-blazer-windshield-wipers.html#ixzz1B4pQJ39h

3 Pull the wiper arm up at the blade so that the blade of the wiper is pointing into the air. Then pull at the base of the arm, wiggling it slightly. It's a keyed gear, so it may take a little bit of work to break it free, but with the right amount of wiggling, it will disengage.

Read more: How to Remove Chevy Blazer Windshield Wipers ' eHow.com http://www.ehow.com/how_6177302_remove-chevy-blazer-windshield-wipers.html#ixzz1B4pJlPaV

2 Unbolt the wiper arm using a 3/8-inch ratchet and socket. Place the bolt to the side, as you will reuse it later.

3 Pull the wiper arm up at the blade so that the blade of the wiper is pointing into the air. Then pull at the base of the arm, wiggling it slightly. It's a keyed gear, so it may take a little bit of work to break it free, but with the right amount of wiggling, it will disengage.

Read more: How to Remove Chevy Blazer Windshield Wipers ' eHow.com http://www.ehow.com/how_6177302_remove-chevy-blazer-windshield-wipers.html#ixzz1B4p1UYyB

2 Unbolt the wiper arm using a 3/8-inch ratchet and socket. Place the bolt to the side, as you will reuse it later.

3 Pull the wiper arm up at the blade so that the blade of the wiper is pointing into the air. Then pull at the base of the arm, wiggling it slightly. It's a keyed gear, so it may take a little bit of work to break it free, but with the right amount of wiggling, it will disengage.

Read more: How to Remove Chevy Blazer Windshield Wipers ' eHow.com http://www.ehow.com/how_6177302_remove-chevy-blazer-windshield-wipers.html#ixzz1B4p1UYyB

Wiper Arm & Blade (Front) Removal & Installation Wiper Blade To Remove:

1. Turn ignition switch to ACCY position.
2. Turn wiper switch to PULSE position and turn ignition OFF when wipers are stopped in the innerwipe position.
3. Push the wiper blade clip button IN and remove wiper blade from wiper arm.

To Install:

1. Insert wiper arm hook through opening in wiper blade.
2. Place wiper blade pivot in the inside radius of wiper arm hook.
3. Pull on wiper blade pivot into hook until it locks into place.
4. Check wipers for proper operation.

Wiper Arm To Remove:
NOTE: Mark position of wiper blade on windshield to ensure proper position upon reassembly.

1. Remove washer hose.
2. Lift wiper arm from windshield and use a screwdriver to disengage retaining latch.
3. Remove wiper arm from shaft.

To Install:

1. Place wiper arm on shaft so that wiper arm aligns with marks placed on windshield.
2. Press arm assembly on shaft and push retaining latch IN.
3. Connect washer hose.
4. Remove windshield markings and check wipers for proper operation.

the blade just lift's off the wiper drive shaft if its sliping around there is a good chance its striped the slines in the wiper are

Hi,
Open the cap at the end of the windshield wiper arm at the cowl of the Blazer. This will reveal the bolt that secures the wiper arm to the wiper linkage. Unbolt the wiper arm using a 3/8-inch ratchet and socket. Place the bolt to the side, as you will reuse it later. Pull the wiper arm up at the blade so that the blade of the wiper is pointing into the air. Then pull at the base of the arm, wiggling it slightly. It's a keyed gear, so it may take a little bit of work to break it free, but with the right amount of wiggling, it will disengage. Then you can replace the new windsheild wiper arms to it.

Thank you !!

why do you think the motor still works if the wipers don't move? Can you hear the motor run or can you see a little movement when you turn the switch on?

What happens when you activate the washers?

go to a salvage yard that allows you to remove the parts yourself. Then you can see how the motor and linkage assembly comes out.


don't have 1983 info, but here is 1994:

Section 01-16A: Wiper and Washer System, Ranger/Explorer 1994 Ranger and Explorer Vehicles Workshop Manual
DESCRIPTION AND OPERATION Windshield Wiper System, Ranger/Explorer The windshield wipers are actuated by a permanent magnet, rotary-type electric windshield wiper motor (17504) . The two windshield wiper pivot arms (17526) and windshield wiper blades (17528) are mounted on a pivot shaft, one at each side of the windshield. The windshield wiper mounting arm and pivot shaft (17566) are connected to the motor by windshield wiper adapter and connecting arm clip (17531) . Ranger and Explorer vehicles are equipped with an interval wiper and washer (IWW) system featuring a lever-type turn signal and windshield wiper switch (13K359) mounted on the steering column. The IWW windshield wiper governor (17C476) uses a relay contact to control current to the windshield wiper motor . The governor electronic circuitry controls the contact to supply current to windshield wiper motor . A rear wiper/washer system is available on Explorer vehicles. The rear window wiper system consists of a windshield wiper motor mounted inside the liftgate (40010) , an articulating windshield wiper pivot arm and windshield wiper blade , a windshield wiper/washer switch (17A553) and an inline circuit breaker. The front electric windshield washer system consists of a control switch, integral with the turn signal, a windshield washer reservoir (17618) and windshield wiper motor and the necessary windshield washer hoses (17A605) , windshield washer nozzle jet and brackets (17603) and attaching parts.
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Pivot Shafts and Linkage Removal and Installation
NOTE: The left and right pivot and windshield wiper adapter and connecting arm clip assemblies are serviced separately.

1. Perform Steps 1 through 9 of Windshield Wiper Motor Removal as described in this section.

1. If servicing left windshield wiper adapter and connecting arm clip , remove left windshield wiper mounting arm and pivot shaft and windshield wiper blade assembly.

1. Remove left windshield wiper adapter and connecting arm clip access cover.

1. Remove left pivot nut, lower windshield wiper adapter and connecting arm clip and slide it out through left access opening. For installation, follow removal procedures in reverse order. Tighten nut to 10-13 Nm (7-10 ft-lb). Make sure the clip is fully seated in the windshield wiper adapter and connecting arm clip . Do not try to install clip with windshield wiper adapter and connecting arm clip on motor crank pin.
   

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Windshield Wiper Motor Windshield wiper motor are not serviceable. If worn or damaged, the windshield wiper motor must be replaced as an assembly. Removal

1. Cycle windshield wiper blades until in straight-up position and turn ignition switch OFF.

1. Disconnect battery and wiper motor electrical connector.

1. Remove the right windshield wiper mounting arm and pivot shaft and windshield wiper blade .

1. Disconnect the battery ground cable (14301).

1. Remove the right pivot nut and allow the windshield wiper adapter and connecting arm clip to drop into the cowl top outer panel .

1. Remove the linkage access cover, located on the right side of the dash panel near the windshield wiper motor.

1. Reach through the access cover opening and unsnap the wiper motor clip.

1. Push the clip away from the windshield wiper adapter and connecting arm clip until it clears the nib on the crack pin. Then, push the clip off the windshield wiper adapter and connecting arm clip.

1. Remove the windshield wiper adapter and connecting arm clip from windshield wiper motor crank pin.

1. Remove nut and ground strap.

1. Remove three attaching nuts from windshield wiper motor. Remove the windshield wiper motor .

Installation

1. Position the windshield wiper motor and install the three attaching screws. Tighten to 13.6-19.0 Nm (10-14 ft-lb).

1. Install nut and ground strap.

1. Connect wiper motor electrical connector.

1. Install clip completely onto right windshield wiper adapter and connecting arm clip. Make sure the clip is fully seated. Do not put the windshield wiper adapter and connecting arm clip on the motor crank pin and then try to install the clip.

1. Install the left windshield wiper adapter and connecting arm clip onto the wiper motor crank pin.

1. Install the right windshield wiper adapter and connecting arm clip onto the wiper motor crank pin. Pull the windshield wiper adapter and connecting arm clip onto the crank pin until it snaps into place. The clip is properly installed if the nib is protruding through the center of the clip.

1. Install the right windshield wiper mounting arm and pivot shaft and nut. Tighten the nut to 9.5-12.5 Nm (84-110 in-lb). NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the powertrain control module (PCM) (12A650) relearns its adaptive strategy. The vehicle may need to be driven 10 miles or more to relearn the strategy.
   

1. Connect the battery ground cable and turn the ignition switch on. Turn turn signal and windshield wiper switch off so windshield wiper motor will park, then turn ignition switch off. Replace right windshield wiper adapter and connecting arm clip access cover.

1. Install the windshield wiper mounting arm and pivot shaft and windshield wiper blade assemblies on the pivot shafts to dimension X. Dimension X is the distance between the centerline of the blade saddle and the top edge of the cowl top outer panel grille. The value of Dimension X for each vehicle is given in the Dimension X chart in the Specifications portion of this section.

1. Test the system.

Yes you can adjust them yourself. First you need to check that the wiper arms are not bent. If not, remove the cap at the wiper arm base, under it u will find a nut, remove this nut. you should now be able to remove the wiper arm. (it is comon for caravan wiper arms to be corroded on. If the arm dosen't come off, you may need to heat up the wiper arm with a propane torch. be careful not to melt the plastic cowel under the arm. OR you can use a wiper puller or a battery puller. do not force it, you can break the arm, DO NOT PRY AGAINST THE COWEL OR WINDSHIELD.
Once both arms are off, turn your van on and turn the wipers on. watch the wiper posts, turn the wipers off and watch the wiper posts return and stop in the "parked" position. Turn the van off. Install the passanger wiper arm first, it is positioned closest to the bottom an inch or two above the black cowel. It should be parrallel to the cowel. next install the drivers side wiper arm. it is positioned about 4 inches above the passanger wiper. again running parrallel to the cowel and passanger wiper. tighten the lock nuts down (do not over tighten) wet down your windshield with glass cleaner or windshield washer fluid and test wipers. If they still hit you can lower the passanger one a little or raise the drivers one a little (careful you don't raise the drivers one too much or it will 'jump' off the windshield at the top of the wipe).
good luck, hope this helps.

2002 Ford F-250 Windshield Wiper Motor Removal & Installation 1. Turn the ignition switch to the ON position. Turn the ignition switch ON until the wiper blades are straight up, then turn the ignition switch OFF. 2. Disconnect the negative battery cable. 3. Remove the right-hand and left-hand windshield wiper arm and blade assemblies. 4. Remove the cowl top vent panels. 5. Detach the electrical hardness connector at the windshield wiper motor assembly. 6. Remove 3 wiper motor (module assembly) retaining bolts and remove the module assembly from the vehicle. 7. Remove the wiper linkage retaining bolt and remove the linkage from the wiper motor. 8. Remove 3 retaining nuts and remove the windshield wiper motor To install; 9. Place the windshield wiper motor in position and install 3 retaining nuts. Tighten to 10-12 ft. lbs. (12-17 Nm). 10. Connect the wiper linkage to the windshield wiper motor and install the retaining bolt. Tighten the bolts to 14 ft. lbs. (20 Nm). 11. Place the wiper motor (module assembly) in position and install 3 retaining bolts. Tighten the bolts to 6 ft. lbs. (9Nm). 12. Install the electrical hardness connector to the windshield wiper motor. 13. Connect the negative battery cable. 14. Allow the windshield wiper motor to cycle several times while checking for proper wiper motor operation. 15. Turn the windshield wiper motor to the OFF position to park the wiper motor in the park position. 16. Install the cowl top vent panels. 17. Install the wiper arm and blade assemblies. Install the retaining nuts and tighten to 22-29 ft. lbs. (30-40 Nm). 18. Connect the negative battery cable. 19. Check the windshield wiper motor for proper operation and the wiper arms for adjustment.

How to Replace Wiper Blades Guide:
Potential tools needed to replace wiper blades:

• Flat blade screwdriver (small)
• Small nosed pliers
• Latex or vinyl gloves
• Safety goggles

To replace wiper blades the actual action of replacing the blade is no big deal, it's the location of the blade down below the hood that can make it difficult though. Sometimes it helps to open the hood to gain access to the wiper blades. Other times it is helpful if the wiper blade is somewhere in the motion line of wiper action. The trick is to get the wiper to stop somewhere in the wiper arc. Turn the wipers to the on position and allow the wipers to start, and then shut the key off when the wiper has arrived in a desirable position on the windshield. To replace your wiper blades please follow the step by step instruction below. Also, watch the How to replace wiper blades video below to gain additional information. The method in which the wiper blades are attached will vary slightly.

• Step 1: With the hood closed, turn the wipers on, when the wipers are in the middle of their arc turn the key to the off position. (Note: if this can't be done because of wiper condition and you want to avoid scratching the windshield please open your hood to gain access)
• Step 2: Locate the mounting clips at the top pivot on the wiper blade
• Step 3: Release the clip and remove the wiper arm
• Step 4: Match the size of the old blade against the new blade to ensure proper fit and operation
• Step 5: Reinstall the new wiper blade and recheck wiper operation

Common Problems:

• Make sure the wiper blades are the same size as the original blades.
• When replacing wiper blades not getting the blade on the mounting pin completely allowing the wiper arm to become dislodged and possibly causing damage to the windshield.
• Using wiper blades after the blade has failed permanently damaging the windshield by craving scratches in the wiper arc.
• Wiper blade can create a chattering noise when the blade is not properly balanced allowing the blade to "flop" back and forth as the wiper direction changes.

I hope help you with this (remember rated this help) Good luck.