Trooper(UX), Rodeo(UC) SOHC Hydraulic Valve Lifter Pr..

BULLETIN NUMBER
SB95-01-L006

ISSUE DATE
SEPTEMBER 1995

GROUP
ENGINE

TROOPER (UX) AND RODEO (UC) SOHC HYDRAULIC VALVE LIFTER PRIMING (Supersedes SB95-01-L003)

AFFECTED VEHICLES
Trooper (UX) and Rodeo (UC) models equipped with 6VD1 SOHC engine.

SERVICE INFORMATION
Hydraulic valve lifters on 6VD1 SOHC engines are self-bleeding. However, when a lifter is replaced, it should be primed (i.e., filled with oil and purged of excess air) before it is reinstalled into its rocker arm, to minimize initial valve noise and ensure proper operation. This Service Bulletin addresses the priming of a replacement SOHC hydraulic valve lifter.

REMOVAL
1. Hydraulic Valve Lifter and Rocker Arm
- Remove old hydraulic valve lifter and rocker arm in accordance with appropriate Workshop Manual.
- Carefully separate new hydraulic valve lifter from its rocker arm.

INSTALLATION
1. Hydraulic Valve Lifter and Rocker Arm






- Push in check ball on underside of lifter, using small diameter rod (2 mm/.O8 in), and submerge new lifter in clean engine oil. Be sure to wear suitable gloves to protect hands from engine oil.
- Pump plunger (located on top of lifter) to fill lifter with oil and purge it of excess air. Keep pumping plunger until no air bubbles are visible in engine oil and plunger becomes hard.
- When no air bubbles are visible, and the plunger is hard, remove the rod to release the check ball.

IMPORTANT: Each hydraulic valve lifter and rocker arm are an integrated set. Do not mix these parts during reinstallation.






- Submerge new rocker arm in clean engine oil and install primed lifter into rocker arm.
- Remove assembly from engine oil and install onto rocker arm shaft in accordance with appropriate Workshop Manual.

FLAT RATE MANUAL INFORMATION
Use existing Flat Rate Manual labor operation number 010247 (right side) or 01A247 (left side).