Assembly
1. Thoroughly lubricate each part prior to installation
using clean, type C-3 hydraulic oil.
2. Reassemble the Amplifier spool assembly in re-
verse order. Refer to steps 12 & 13, and Figure
6-9 under disassembly.
3. Install orifice screw (13, Figure 6-7). Tighten orifice
screw to 4 in. lbs. (.5 N.m) torque.
4. Install check valve (47). Tighten check valve to 8
in. lbs. (1 N.m) torque.
5. Install orifice screw (45). Tighten orifice screw to
8 in. lbs. (1 N.m) torque.
6. Install seal (55) and relief valve assembly (54).
Install seal (19), and plug (18). Tighten plug to 22
in. lbs. (2.5 N.m) torque.
7. Install counterpressure valve assembly (15). In-
stall plug (17) using new O-ring (16).
8. Install both shock and suction valves (12 & 26) as
complete units. Install spring stop (20) springs (21
& 22) and spring control (23). Install orifice screws
(24 & 33) if removed from main spool (27). Install
main spool (27).
9. Install amplifier spool assembly (53). Install priority
valve spool (44) and spring (43). Install spring
(52).
10. Install spring control (29), springs (30 & 31) and
spring stop (32).
11. Lubricate O-rings (6, 7 & 8) with molycote grease
and position on cover (5). Install end cover (5).
Install capscrews (3) with lockwashers (4).
Tighten capscrews to 2 ft. lbs. (2.7 N.m) torque.
Install capscrew (1) and lockwasher (2). Tighten
capscrew to 6 ft. lbs. (8 N.m) torque.
12. Lubricate O-rings (38 & 40) with molycote grease
and install on cover (39). Install end cover (39).
Install capscrews (34) with lockwashers (37).
Tighten capscrews to 2 ft. lbs. (2.7 N.m) torque.
Install capscrew (35) with lockwasher (36).
Tighten capscrew to 6 ft. lbs. (8 N.m) torque.
13. To prevent contamination, fit plastic plugs to each
open valve port.
L06021 Steering Circuit Component Repair L6-9
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