Loader Bobcat 773. Manual - part 29

CONTROL VALVE (S/N 509640659 & Below, S/N
509616541 & Below) (Cont’d)

Main Relief Valve

Loosen the main relief valve [A].

Assemble: Always use new O–rings and back–up
washers. Tighten to 35–40 ft.–lbs. (47–54 Nm) torque.

Remove the main relief valve [B].

Remove the O–ring and back–up washers from the main
relief valve [C].

Port Relief Valve

Loosen the port relief valve [D].

Assemble: Always use new O–rings and back–up
washers. Tighten to 35–40 ft.–lbs. (47–54 Nm) torque.

NOTE: The port relief valve can be located on either

side of the control valve (E or F ports). (See
CONTROL VALVE Identification Chart Page
2–60.)

Revised Jan. 99

A

CD–10796

C

CD–10798

E–01509

1. Relief Valve
2. Back–up Washer
3. O–ring
4. O–ring
5. Back–up Washer

1

2 3 4 5

D

CD–10799

–2–62–

773 BICS Loader

Service Manual

B

CD–10797

CONTROL VALVE (S/N 509640659 & Below, S/N
509616541 & Below) (Cont’d)

Port Relief Valve (Cont’d)

Remove the port relief valve [A].

Remove the O–rings and back–up washer from the port
relief valve [B].

NOTE: The port (Item 1) [A] may contain an available

3500 PSI anti–cavitation/port relief valve for
the base end of the tilt section.

NOTE: The anti–cavitation valve can be located on

either side of the control valve (E or F ports).
(See  CONTROL VALVE Identification Chart
Page 2–60.)

Remove the anti–cavitation valve from the control valve
[D].

NOTE: This port (Item 1) [D] may contain an available

3500 PSI port relief valve for the rod end of the
tilt section.

Anti–Cavitation Valve

Loosen the anti–cavitation valve [C].

Assemble: Always use new O–rings and back–up
washers. Tighten to 35–40 ft.–lbs. (47–54 Nm) torque.

Revised Jan. 99

A

CD–10800

1

C

CD–10802

D

CD–10803

1

773 BICS Loader

–2–63–

Service Manual

B

CD–10801

E–01509

1. Relief Valve
2. O–ring
3. Back–up Washer
4. O–ring

1

2

3

4

CONTROL VALVE (S/N 509640659 & Below, S/N
509616541 & Below) (Cont’d)

Anti–Cavitation Valve (Cont’d)

Remove the O–rings and back–up washer from the
anti–cavitation valve [A].

Rubber Boot

Loosen the two bolts on the rubber boot retainer [B].

Assemble: Tighten the bolts to 90–100 in.–lbs.
(10,2–11,3 Nm) torque.

Remove the bolts [C].

Remove the rubber boot and retainer [D].

Revised Jan. 99

A

CD–10804

E–01509

1. Anti–Cavitation Valve
2. O–ring
3. Back–up Washer
4. O–ring

1

2

3

4

C

CD–10806

D

CD–10807

–2–64–

773 BICS Loader

Service Manual

B

CD–10805

CONTROL VALVE (S/N 509640659 & Below, S/N
509616541 & Below) (Cont’d)

Rubber Boot (Cont’d)

Remove the back–up washer [A].

After the spool is removed, use a O–ring pick and remove
the spool seal from the spool bore [B].

NOTE: See Page 2–73 for spool seal identification

and installation.

Lift Spool Detent

The tool listed will be needed to do the following
procedure:

MEL1278 – Detent Tool

Remove the snap ring with a screwdriver [C].

Remove the snap ring and washer [D].

Revised Jan. 99

A

CD–10808

C

CD–10810

D

CD–10811

773 BICS Loader

–2–65–

Service Manual

B

CD–10809