Hitachi EX20UR-2 Manual page 359

I
ENGINE/Engine
Use B
If head & body are not
Torque 1.5 — 2.5
Timing gear case
To install the timing gear case, tighten bolts in the order
of 1 to 11 as shown to left
(kg.m)
Note 1: Insert a governor link plate and set spring into a
pump link hole before installing the timing gear
case.
Note 2: Cut off protrusion of packing (4 places) after
tightening the case.
Measurement of piston head projection
Measure piston head projection in the engine assembly
line, and select and insert a cylinder head gasket of
proper thickness.
For assembly line
Piston projection
Gasket identification mark
below 0.694 A
above 0.694 B
For service
The encircled numbers
indicate tightening steps.
Fly-weight and sleeve
Install a fly-weight and sleeve on the injection pump
gear.
Note: 1 Apply engine oil to the sliding face of sleeve
shaft and fly-weight.
Note: 2 Insert the flange of sleeve into a recess of fly-
weight.
Note: 3 Confirm that the sleeve shaft rotates smoothly.
El
Identification mark
If head & body are reground Use OS
u.
W05-02-43