TM 9-4940-549-14&P
Inspect the gear cover and gear housing for cracks, distortion,
(3)
and other damage. Replace either if damaged.
Check that gear housing dowel pins and stud in the cylinder
(4)
block are tight and that the stud threads are in good condi-
tion. Replace any damaged parts.
Inspect the fuel injection pump drive gear, camshaft gear and
(5)
idler gear for chipped, cracked, or broken teeth. Replace dam-
aged gears.
Check the idler gear bearing for wear or rough operation.
(6)
There should be just perceptible play in the bearing. Replace
a worn bearing.
(7)
Check that the idler gear shaft is tightly fitted in the gear
housing. It must withstand a direct pull of 32-pounds. Re-
place a loose-fitting idler gear shaft.
d.
Installation.
(1) If the gear housing was removed, install as follows:
Cement a new gasket (40, figure 12-3) to the gear hous-
(a)
ing, allowing the cement to dry sufficiently to prevent the
gasket from slipping at installation.
Place the gear housing on the cylinder block; install the
(b)
attaching bolts (32 and 34) and lockwashers (33 and 35)
but do not tighten completely.
Install the front oil pan adapter, securing it to the cy-
(c)
linder block with two nuts and lockwashers. Secure the
adapter to the gear housing with four bolts and lockwash-
ers. Tighten the gear housing bolts and nuts evenly and
securely.
Install the oil pan.
(d)
Install the fuel injection pump
(e)
(f)
Install the camshaft gear (28) on the camshaft, aligning
the timing mark with timing mark on the crankshaft gear.
Insert a brass bar between the camshaft and crankshaft
gears. Pull down and secure the gear with the camshaft
nut (27). Torque to 125-130 lb-ft.
(2) Turn the crankshaft so that the flywheel timing marks indicate
the required fuel injection pump timing position for the timing
cylinder.
(3) Install a new oil seal (21) in the gear housing cover, using a
small amount of sealing compound in the bore before pressing in
the seal. If a new seal is precoated, sealing compound is not
required. Cement a new gasket to the gear housing cover.
12-9
