GMC 1982 Light Duty Truck Service Manual page 265

G E A R A N D P U M P L E A K D I A G N O S IS
Fig. 3B3-8--Gear and Pump Leak Diagnosis
POWER STEERING SYSTEM
START ENGINE AND TURN STEERING WHEEL FROM STOP TO STOP
SEVERAL TIMES. 0 0 NOT HOLD AT STOP FOR ANY LENGTH OF
TIME AS THIS CAN DAMAGE THE POWER STEER INGPUMP.
1. CHECK O IL LEVEL IF LEAKAGE PERSISTS WITH THE LEVEL
CORRECT AND THE CAP TIGHT. REPLACE CAP.
2. CRACKED OR BENT RESERVOIR. REPLACE RESERVOIR.
3. REPLACE RESERVOIR " 0 " R ING.
4. REPLACE FRONT SEAL MAKE CERTAIN THAT DRIVE SHAFT IS
CLEAN AND FREE OF PITTING IN SEAL RIDE A'REA.
5. TORQUE HOSE FITTIN G NUT TO 27 N-m (20 FT. L B S .). IF
LEAKAGE PERSISTS. REPLACE " 0 " R ING SEAL
6. TORQUE FITTIN G T 0 4 8 N-m (35 FT. L B S .). IF LEAKAGE
PERSISTS. REPLACE BOTH " 0 " RING SEALS.
7. TORQUE NUT TO 27 N-m (20 FT. L B S .). REPLACE NUT IF
LEAKAGE PERSISTS.
8. TORQUE SIDE COVER BOLTS TO 60 N-m (45 FT. L B S .).
REPLACE SIDE COVER SEAL IF LEAKAGE PERSISTS.
9. REPLACE ADJUSTER PLUG " 0 " R ING SEAL
10. REPLACE ROTARY VALVE ASSEMBLY.
11. REPLACE ADJUSTER PLUG SEALS.
12. SEAT BALL FLUSH WITH PUNCH AND RESTAKE. IF SEEPAGE
PERSISTS. REPLACE HOUSING.
13. REPLACE BOTH PITM AN SHAFT SEALS.
14. REPLACE END PLUG " 0 " RING SEAL
15. REPLACE SIDE COVER " 0 " RING SEAL
16. REPLACE DUST SEAL AND PITMAN SHAFT SEAL
17. TORQUE NUT TO 48 N-m (35 FT. LBS. I. REPLACE NUT IF
LEAKAGE PERSISTS.
3B3-9