844K and 854K Wheel Dozers and 990K, 992K, 993K, 994F and 994H Wheel Loaders Powered Access Stairway Caterpillar

Electric Drive Pump (Powered Stairway)

Usage:

990K A9P

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Illustration 1	g06055278

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Table 1
Specification for 462-7789 Electric Drive Pump Gp
Item	Qty	Part	Specification Description
1	2	-	Tighten to 8.0 ± 0.6 N·m (70.8 ± 5.3 lb in).
2	-	-	Tighten cartridge to 25.8 ± 1.4 N·m (228.3 ± 12.4 lb in). Tighten nut to 6.0 ± 0.7 N·m (53.1 ± 6.2 lb in).
3	3	-	Tighten to 12.2 ± 1.4 N·m (108.0 ± 12.4 lb in).
4	-	Drain Port	Torque to 24.9 ± 1.0 N·m (220.4 ± 8.9 lb in).
5	-	-	Tighten cartridge to 25.8 ± 1.4 N·m (228.3 ± 12.4 lb in). Tighten nut to 6.0 ± 0.7 N·m (53.1 ± 6.2 lb in).
6	-	Top Nut	Torque to 4.0 ± 0.6 N·m (35.4 ± 5.3 lb in).
7	-	Top Nut	Torque to 3.4 N·m (30.1 lb in).
8	-	Top Nut	Torque to 4.5 N·m (39.8 lb in).
9	-	Top Nut	Torque to 2.8 ± 0.6 N·m (24.8 ± 5.3 lb in).
10	-	Flow Control Valve	Torque to 25.8 ± 1.4 N·m (228.3 ± 12.4 lb in).
11	-	Check Valve	Torque to 25.8 ± 1.4 N·m (228.3 ± 12.4 lb in).
12	-	Top Nut	Torque to 8.2 ± 1.4 N·m (72.6 ± 12.4 lb in).
13	-	Top Nut	Torque to 9.5 N·m (84.1 lb in).
14	-	Auxiliary Return	Torque to 15.3 ± 1.0 N·m (135.4 ± 8.9 lb in).
15	2	-	Tighten to 8.5 ± 0.6 N·m (75.2 ± 5.3 lb in).
16	4	-	Torque to 15.3 ± 1.0 N·m (135.4 ± 8.9 lb in).
17	-	Relief Valve	Torque to 18.6 ± 1.0 N·m (164.6 ± 8.9 lb in).

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