TESTING
Cylinder Compression
WARNING
Avoid contact with hot manifolds, pulleys, and other moving parts. Wear proper ear
protection when running engine. Failure to comply may result in injury to personnel.
1.
Start engine and operate at one-half rated load until coolant outlet temperature is 165–185°F (71.1–85.0°C).
Stop engine and remove rocker arm cover (WP 0052) or (WP 0053).
2.
Move speed control lever (Figure 1, Item 5) to NO FUEL position.
3.
Loosen four fabricated fuel tube assembly nuts (Figure 1, Item 2) and remove two fuel tubes
(Figure 1, Item 1) from one cylinder position.
4.
Rotate appropriate cylinder to bottom dead center.
5.
On 1R cylinder, for all except model 5063-5299, remove two nuts (Figure 2, Item 8), two lockwashers
(Figure 2, Item 7), and U-bolt (Figure 2, Item 11) from throttle delay lever assembly (Figure 2, Item 6).
Discard lockwashers.
6.
Remove two rocker shaft bracket bolts (Figure 1, Item 3).
7.
On models 5063-5392, 5063-5393, and 5063-539L, remove hold-down bracket (Figure 2, Item 10) and
rocker shaft bracket bolt (Figure 2, Item 3) of any adjacent cylinder.
8.
Swing rocker arms (Figure 1, Item 4) away from injector and valves.
2
3
1
3
1
5
NO
FUEL
4
2
MAINT_422
Figure 1.
Fuel Tube Removal.
9.
On 1R cylinder, for all except model 5063-5299, remove throttle delay lever assembly (Figure 2, Item 6)
from throttle delay bracket (Figure 2, Item 9) (WP 0072).
TM 9-2815-205-24
0101
0101-2