TM 55-2815-574-24
0147
INSTALLATION
1.
Place new ring seal (Figure 3, Item 1) on fresh water pump body (Figure 3, Item 2).
CAUTION
Do not damage gear teeth when engaging the pump gear to front camshaft gear.
2.
Mount pump body (Figure 3, Item 2) on engine so that the pump gear meshes with camshaft gear.
Figure 3. Water Pump Body.
NOTE
The flat washer identified as callout number (Figure 2, Item 4) shall be installed on the top
back bolt of the water pump.
3.
Install pump body (Figure 2, Item 1) to engine front cover using mounting bolts (Figure 2, Item 3 and 6), flat
washers (Figure 2, Items 4 and 5) and lockwasher (Figure 2, Item 2).
4.
Using torque wrench and socket set, torque bolts (Figure 2, Items 3 and 6) to 420 to 456 in-lb
(47 to 52 Nm).
5.
Check gear backlash as follows:
a.
Remove five cover bolts (Figure 4, Item 4) and lockwashers (Figure 4, Item 5) securing water pump
cover (Figure 4, Item 3) and cover gasket (Figure 4, Item 2).
b.
Remove water pump cover (Figure 4, Item 3) and cover gasket (Figure 4, Item 2) from pump body
(Figure 4, Item 1).
c.
Install a 5/16- in. X 18X2 bolt (Figure 5, Item 3) in the impeller (Figure 5, Item 2) puller hole.
NOTE
Gear backlash setting should be 0.001 to 0.006 in (.025 to .15mm).
d.
Using a dial indicator, measure the backlash at bolt (Figure 5, Item 3) in impeller (Figure 3, Item 6).
(1)
If specified backlash is not obtained, loosen pump mounting bolts (Figure 2, Items 3 and 6) and
pivot pump body (Figure 2, Item 1) about the dowel pin to obtain proper lash adjustment.
(2)
Using torque wrench and socket set, torque the pump mounting bolts (Figure 2, Items 3 and 6)
to 420 to 456 in-lb (47 to 52 Nm).
