TM 5-4310-354-14
(3) Turn the engine crankshaft so that number 1 or
4 piston is in the firing position. In this position
the piston assembly is fully extended above the
crankshaft.
(4) Remove cap screws (1, figure 7-43) and lock
washers (2) that attach the oil pump and remove
the oil pump.
(5) Disassemble oil pump in numerical sequence
shown in figure 7-43 as follows:
TS 5-4310-354-14/7-42
REMOVAL
STEP 1.
DISCONNECT
TACHOMETER
DRIVE
CABLE.
REMOVE CAP SCREW AND
ADAPTER CLAMP.
STEP 2.
REMOVE
ADAPTER
AND
O-RING.
REMOVE TACHOMETER DRIVE SHAFT
ASSEMBLY.
STEP 3.
REMOVE
OVERSPEED
SWITCH
TRANSMITTER FROM ADAPTER.
STEP 4.
REMOVE CAP SCREWS, ADAPTER, AND
GASKET. REMOVE OVERSPEED DRIVE
GEAR AND SHAFT ASSEMBLY.
INSTALLATION
STEP 1.
INSTALL OVERSPEED DRIVE GEAR AND
SHAFT ASSEMBLY.
USE A NEW
GASKET AND INSTALL GASKET AND
ADAPTER.
SECURE
WITH
CAP
SCREWS.
STEP 2.
INSTALL
THE
OVERSPEED
TRANSMITTER ON ADAPTER.
STEP 3.
INSTALL TACHOMETER DRIVE SHAFT
ASSEMBLY. USE A NEW O-RING AND
INSTALL O-RING AND ADAPTER.
STEP 4.
INSTALL
ADAPTER
CLAMP
AND
SECURE WITH CAP SCREW. CONNECT
TACHOMETER DRIVE CABLE.
Figure 7-42. Tachometer drive and overspeed switch
drive, removal and installation.
7-48
