Engine Maintenance Schedule; Torque Specifications For Machine Hardware - Wisconsin vg4d Repair Manual

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ENGINE MAINTENANCE SCHEDULE
, Ref.
CHECK OIL LEVEL. Add to full mark * Do not overfill. 5
CHECK AIR CLEANER. Shake out accumulated dirt from
dry element cleaner * Maintain oil level in all bath type cleaner.
7
CLEAN AIR INTAKE SCREEN. Cleon cooling fins if necessary. 9
CLEAN AIR FILTER ELEMENT. Dry Element and Oil Bath types. 7
CHANGE CRANKCASE OIL. Use grade and classification of oil recommended.
5
In adverse conditions change oil every S0 hours of operation.
REPLACE OIL FILTER every oil change. Replacement Filter RV-40.
8
CLEAN CRANKCASE BREATHER CAP. 8
CHECK COMPRESSION. Pressure should not vary more than 10 p.s.i, between
21
cylinders. Remove head- clean out carbon deposits. Reseat valves if necessary
INSPECT SPARK PLUGS and BREAKER POINTS.
9,10
Raplaca if necessary and regap to specification.
INSPECT FUEL FILTER. Cleon filter screen and glass bowl. 8
LUBRICATE DISTRIBUTOR CAM and breakm" arm pivot. 8
INSPECT COOLING S~'STEM. Remove shrouding and scrape off
dirt from between fins, around cylinders and from shrouding.
9
INSPECT STARTING MOTOR. Check for loose mounting and cable connections. 9
CHANGE OIL IN CLUTCH and REDUCTION GEAR HOUSINGS.
6
Week ly
Doily or 50 hrs. 100 hrs. 1250 hrs. Seasonally
or 500 hrs.
TORQUE
Special Torque Values
TORQUE
Foot Pounds
28-32
56-62
28-32
8-11
16-18
32-35
25-30
95-110
25-30
PART
CONNECTING
ROD
CYLINDER
BLOCK
CYLINDER
HEAD
OIL PAN
(ENGINE BASE)
GEAR
COVER
MANIFOLD
~
NTAKE &
XHAUST)
MAIN BEARING
PLATE
FLYWHEEL
NUT
SPARK PLUG
SPECIFICATIONS FOR MACHINE HARDWARE (dr),)
General Torque Values- Maximum Foot Pounds
MARKINGS
ON
BOLT HEADS
SAE GRADE
1 or2
SAE GRADE
5
SAE GRADE
8
Foot Pounds Foot Pounds Foot Pounds
SIZE
Torque
Torque Torque
10-24
10-32
I/4-20
I/4-28
5/16-18
5/16-24
3/8-16
3/8-24
7/16-14
7/16-20
I/2-13
I/2-20
13
14
23
26
37
41
57
64
2.3
2.5
6
7
3.5
4
11
13
21
23
40
6O
85
95
5
5.6
12
15
25
30
5O
60
85
95
125
140
Caution: T'~htening into aluminum usually requires less torque.
Increase Chart Torque Values by 20% if lubricant is used.
42