Gear Group - Inspect - Perkins 1104D NH1 Systems Operation Testing And Adjusting

RENR7967
Illustration 73
Typical example
1. Install Tooling (A). See illustration 73.
2. Set the pointer of the dial indicator to 0 mm
(0 inch).
3. Check the alignment at intervals of 45 degrees
around the flywheel housing.
4. Calculate the difference between the lowest
measurement and the highest measurement. This
difference must not be greater than the limit that is
given in Table 13.
Note: Any necessary adjustment must be made on
the flywheel housing.
Table 13
Limits for Flywheel Housing Runout and Alignment
(Total Indicator Reading)
Bore of the Housing
Flange
410 mm (16.14 inch)
448 mm (17.63 inch)
g01199467
Maximum Limit (Total
Indicator Reading)
0.25 mm (0.010 inch)
0.28 mm (0.011 inch)
Testing and Adjusting Section

Gear Group - Inspect

Illustration 74
(1) Camshaft gear
(2) Idler gear
(3) Fuel injection pump gear
Note: If one or more of the gears need to be removed
for repair, refer to Disassembly and Assembly, "Gear
Group (Front) - Remove and Install" in order to
properly remove the gears. Refer to Disassembly and
Assembly, "Gear Group (Front) - Remove and Install"
in order to properly install the gears.
1. Inspect the gears for wear or for damage. If the
gears are worn or damaged, use new parts for
replacement.
2. Measure the backlash between the camshaft
gear (1) and the idler gear (2). Refer to
Specifications, "Gear Group (Front)" for the
backlash measurement.
3. Measure the backlash between the idler
gear (2) and the crankshaft gear. Refer to
Specifications, "Gear Group (Front)" for the
backlash measurement.
4. Measure the backlash between the fuel injection
pump gear (3) and the idler gear (2). Refer to
Specifications, "Gear Group (Front)" for the
backlash measurement.
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