Chrysler RAM TRUCK 2500 1994 Service Manual page 182

•
POWER BRAKE VACUUM PUMP (DIESEL MODELS) 5 - 23
J9105-98
Fig. 8 Pump Assembly Removal
COUPLING
O-RING PUMP
ADAPTER
J9105-99
Fig. 9 Vacuum Pump Removed From Adapter
(6) Verify that pump is seated i n adapter and cou­
pling.
(7) Install and tighten pump attaching nuts and
washers.
PUMP ADAPTER REPLACEMENT
(1) Remove coupling from adapter (Fig. 11).
(2) Remove remaining adapter attaching nuts and
remove adapter from steering pump (Fig. 12).
(3) I f steering pump will be serviced, remove
spacer from each inboard mounting stud on pump
(Fig. 12).
(4) Clean and lubricate pump shaft with engine oil.
(5) Install spacers on steering pump studs (Fig.
12).
(6) Install O-ring on adapter (Fig. 11).
(7) Position adapter on pump studs.
(8) Install attaching nuts on outboard stud and on
the two upper pump studs. Do not install nut on
lower, inboard stud at this time. Tighten nuts to 24
N-m (18 ft. lbs.) torque.
(9) Install coupling on pump shaft. Be sure cou­
pling is securely engaged i n shaft drive tangs.
ROTATE DRIVE
GEAR TO ALIGN
TANGS J9105-102
Fig. 10 Aligning Pump Shaft Drive Tangs
Fig. 11 Removing/Installing Pump Drive Coupling
(10) Install vacuum pump on adapter. Rotate drive
gear until tangs on pump shaft engage in coupling.
Verify that pump is seated before installing attaching
nuts.
(11) Install and tighten vacuum pump attaching
nuts.
VACUUM—STEERING PUMP ASSEMBLY
INSTALLATION
(1) Position new gasket on vacuum pump mount­
ing flange (Fig. 13). Use Mopar perfect seal, or sili-