Yanmar 3TNV82A-B Service Manual page 261

Fuel Injection Pump
(2)
Figure 7-12
15. Remove the fuel injection pump drive gear
cover (Figure 7-13, (1)) from the gear case
cover (Figure 7-13, (2)).
Note: The fuel injection pump drive gear cover
is secured with an adhesive sealant. Use
a gasket scraper to separate the fuel
injection pump cover from the gear case
cover.
(1)
Figure 7-13
Note: TNV82-88 shown.
TNV DI Service Manual
16. To position the fuel injection pump for easier
removal and installation, install a dial indicator
(see Checking and Adjusting Fuel Injection
Timing on page 7-30) into the injection pump
plunger opening. Using a wrench on the
(1)
crankshaft pulley bolt, rotate the crankshaft until
the dial indicator shows that injection pump
plunger is at the bottom of it's stroke.
17. To aid in reassembly, make reference marks on
the fuel injection pump drive gear, and on either
the gear case cover or idler gear.
0000593B
After marking the position of the pump
drive gear, do not rotate the engine
crankshaft. Rotating the crankshaft will
cause the fuel injection pump to become
misaligned.
• On TNV82-88 model engines, the idler gear is
(2)
0002039
CAUTION
not visible. Make a reference mark on the fuel
injection pump drive gear (Figure 7-14, (1))
and a matching mark on the bore of the gear
case opening (Figure 7-14, (2)).
(1)
Figure 7-14
FUEL SYSTEM
0000048en
(2)
0000575 0000575A
7-21