819.4496
17
Service
F
IG
. 9
_______________________
F
IG
. 10
_______________________
Reassembly
1.
If you removed the bearings (12, 15), install new ones as
explained on page 23. Reassemble the fluid section.
2.
On aluminum center housing models, install the valve
plate seal (9
†
) into the groove at the bottom of the valve
cavity. The rounded side of the seal must face down
into the groove. See F
3.
Install the valve plate (8) in the cavity. On aluminum
center housing models, the plate is reversible, so either
side can face up. Install the three screws (3), using a
Torx (T20) screwdriver or 7 mm socket wrench. Tighten
until the screws bottom out on the housing. See F
4.
Install an o-ring (17
†
) on each pilot pin (16). Grease the
pins and o-rings. Insert the pins into the bearings (15),
narrow end first. See F
5.
Install a u-cup packing (10
†
) on each actuator pis
ton (11),
so the lips of the packings face the narrow end of the
pistons. See F
6.
Lubricate the u-cup packings (10
†
) and actuator pistons
(11). Insert the actuator pistons in the bearings (12),
wide end first. Leave the narrow end of the pistons
exposed. See F
7.
Grease the lower face of the pilot block (18
†
) and install
so its tabs snap into the grooves on the ends of the pilot
pins (16). See F
8.
Grease the o-ring (6
†
) and install it in the valve
block (7
†
).
Push the block onto the valve carriage (5). Grease the
lower face of the valve block. See F
9.
Install the valve carriage (5) so its tabs slip into the
grooves on the narrow end of the actuator pistons (11).
See F
10. Align the valve gasket (4
†
) and cover (2) with the six
holes in the center housing (1). Secure with six screws
(3), using a Torx (T20) screwdriver or 7 mm sock- et
wrench. Torque to 5.6–6.8 N•m. See F
Insert narrow end first.
Grease.
Install with lips facing
narrow end of piston (11).
Insert wide end first.
1
2
3
4
17
16
11
10
12
15
1
2
3
4
2
04901B
03947
8
9
3
1
2
Rounded side must face
down.
Tighten screws until they
bottom out on the housing.
1
2
