ENGINE COMPRESSION
Checking
The tool listed will be needed to do the following
procedure:
OEM1073 - Compression Gauge & Hose
The engine must be at operating temperature.
Remove the spark plugs
[A).
Installation:
Tighten the spark plugs to
18-22
ft.
-Ibs
.
(24-30
Nm) torque.
Connect a compression gauge
[B).
The engine should be turning at about 250 RPM.
The compression should
be
about 150 PSI (1024 kPa)
with no more than 10% difference between cylinders.
Added Sept.
90
-70-3-
741,742,
743,
7430S
Bobcat Loader
Service Manual
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