HOOD GP-TRUCK 2788416 - Caterpillar

Illustration 15 g03773451
Allow the impeller to cool. With the auxiliary water pump assembly positioned upright, check for free rotation of the shaft. If contact occurs between the impeller and the port plate, remove the impeller and the port plate and check for proper installation of both components.
Illustration 16 g03773481
Align notch in port plate (23) with the drain plug hole in impeller housing (6) and install port plate (23) .
Illustration 17 g03773483
Install drain plug (26) and the O-ring seal and tighten to a torque of 16.5 1.5 N m (146 13 lb in).
Illustration 18 g03773511
Align notch in port plate (22) with the drain plug and install port plate (22) .
Illustration 19 g03773526
Raise the temperature of impeller (21). Install impeller (21) with the three-digit orientation feature facing upward until impeller (21) comes to rest on the shoulder of the shaft.
Allow impeller (21) to cool and check for free rotation. If contact occurs, adjust the shims between the bearing housing and the impeller housing.
Illustration 20 g03773588
Align the tab of port plate (3) with the notch in cover (2) and install port plate (3).
Position the auxiliary water pump assembly upright. Ensure that the weight of the auxiliary water pump assembly is being supported by the mounting flange. Do not support the auxiliary water pump by the shaft.
Illustration 21 g03773539
Position cover (2) onto the auxiliary water pump assembly. Place a weight of approximately 2 kg (5 lb) onto the center of cover (2). Measure and record the gap at Locations (X), then remove the weight and cover (2) .Note: Measurements will be used to select shims for final installation of cover (2) .
Illustration 22 g03773600
Install the O-ring seal onto tube (27). Lubricate the O-ring seal and install tube (27) into impeller housing (27) .
Illustration 23 g03773605
Install O-ring seals (4) and lubricate with Tooling (D) .
Illustration 24 g03762436
Position cover (2) for installation. Using a dead-blow hammer, gently tap cover (2) to install. Position the shims in the locations as recorded in Step 23.
Illustration 25 g03774144
Install bolts (1). Tighten bolts (1) in the following sequence:
Tighten the Bolts A, B and C in sequence to a torque of 10 N m (89 lb in) .
Tighten the Bolts A, B and C in sequence to a torque of 18 1 N m (159 9 lb in) .
Tighten the Bolts A and B in sequence to a torque of 24 1 N m (212 9 lb in).
Tighten the Bolt A to a torque of 27 1 N m (239 9 lb in).
Illustration 26 g03773609
Install gear (9) and bolt (8). Using Tooling (A) to stabilize the gear, tighten bolt (8) to a torque of 55 7 N m (41 5 lb ft).
Using Tooling (F) on bolt (8), measure the rotational torque of the assembly. The rotational torque should be between .4 N m (3.50 lb in) and 1.5 N m (13.30 lb in).End By: Install the auxiliary water pump.