TM 5-2420-230-24-1
Manual Plunger Adjustment
Relief plunger adjustment should be checked during pre-delivery. Any time tire size or steering gears are
changed, relief plunger adjustment will be necessary. A relief plunger is located in each end cap of the steer-
ing gear; one for right turn, one for left turn.
TOOLS REQUIRED:
Small blade screwdriver
1/8" piece of steel flat stock
WARNING TOOLS OR SAFETY PROCEDURES ALWAYS FOLLOW
FOR OTHER EQUIPMENT,
THE VEHICLE
MANUFACTURER'S
PROCEDURES
FOR
LIFTING AND
BLOCKING.
ADDITIONAL REFERENCES:
Vehicle Manufacturer's Service Manual
R. H. Sheppard Co. Maintenance & Troubleshooting Video (Optional)
PROCEDURE:
NOTE:
Never attempt to adjust relief plungers until the axle stops are set following Vehicle
Manufacturer's Specifications.
1. Park the vehicle on a clean, dry, solid surface-preferably concrete. Set the parking brake and block the wheels.
2. Place the transmission in neutral and start the engine.
3. Allow the engine to operate at idle speed.
NOTE:
It is always best to have 2 people when setting plungers; 1 to steer the vehicle and 1 to
set and check adjustments.
4.
Locate the plungers.
5.
Determine which plunger is used to adjust right and left turns based on direction of pitman arm travel.
6.
Turn the steering wheel to a full left turn and check the clearance using the steel flat stock as a feeler gauge
between the axle stop bolt and the axle. If the clearance is not 1/8", plunger adjustment will be necessary.
WARNING
IF THE STOP BOLT HITS THE AXLE UNDER PRESSURE, RELEASE THE WHEEL
IMMEDIATELY! DAMAGE TO STEERING COMPONENTS MAY RESULT.
7.
Return the front tires to the straight ahead position and release the steering wheel. Using the screwdriver,
adjust the plunger for left turn. Turning the plunger in will increase the clearance between the stop bolt
and the axle, while turning the plunger out will decrease the clearance.
WARNING
NEVER ADJUST THE PLUNGER BEYOND FLUSH WITH THE END CAP.
LEAKAGE OR PERSONAL INJURY MAY RESULT.
8.
Turn the steering wheel to a full left turn. Check the 1/8" clearance using the steel flat stock as a feeler gauge.
WARNING
THE FLAT STOCK IS USED AS A FEELER GAUGE ONLY. D O NOT
SQUEEZE OR PINCH THE FLAT STOCK BETWEEN THE STOP BOLT AND
AXLE. DAMAGE TO PARTS MAY RESULT.
9.
If further adjustment is required, repeat steps 7 & 8 until the 1/8" clearance is achieved.
10.
Repeat steps 6 thru 9 for the right turn.
K-47