Backhoe Valve Linkage Adjustment

Checking Backhoe Control Lever-to-Valve Linkage

NOTE: Levers must be adjusted correctly to ensure clearance with seat and allow full lever travel.

1. Move backhoe control levers to NEUTRAL.

2. Attach a piece of masking tape across rear surface of rear ROPS posts at height of backhoe lever knobs.

3. Measure from knob edges-to-tape. Adjust both knob edge-to-tape distances (A) to specification. (See Adjusting Backhoe Control Lever-to-Valve Linkage procedure.)

Specification

Knob Edge-to-Tape -Distance 240 mm (9.5 in.)

4. Measure from knob center-to-knob center. Adjust knob center-to-knob center distance (B) to specification. (See Adjusting Backhoe Control Lever-to-Valve Linkage procedure.)

Specification

Knob Center-to-Knob Center -Distance 260 mm (10.25 in.)

5. Check levers for full travel and proper operation. Linkage rods should not contact each other at any lever position.

T134736B

Optional Two-Lever, Five-Function Configuration Shown


A-Knob Edge-to-Tape Distance
B-Knob Center-to-Knob Center Distance

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Adjusting Backhoe Control Lever-to-Valve Linkage

causym CAUTION: Prevent possible injury from unexpected machine movement. NEVER rely on FNR lever alone to keep machine from moving. Always set park brake to hold machine.

Prevent possible injury from unexpected machine movement. Lower all equipment to ground and release hydraulic pressure before working near hydraulic equipment.

1. Engage park brake. Lower all equipment to ground. Turn engine OFF. Release hydraulic pressure by moving control levers until equipment does not move. (See Practice Safe Maintenance in Safety chapter for more information.)

2. Remove rear floor mat, cap screws, and backhoe lever console cover.

3. On cab machines, move upper rear window, middle rear window, and lower rear window to maximum UP position. Install screw to hold lower rear window in UP position.

4. Adjust knob edge-to-tape distance for each backhoe control lever, then adjust knob center-to-knob center distance.

For each linkage adjustment:

a. Loosen jam nuts (A).

b. Turn linkage rod (B) to adjust lever position.

c. Measure lever position. Repeat steps b and c as necessary to meet specifications.

Specification

Knob Edge-to-Tape -Distance 240 mm (9.5 in.)
Knob Center-to-Knob Center -Distance 260 mm (10.25 in.)

d. Tighten jam nuts.

T132841B

Optional John Deere Two-Lever, Six-Function Configuration Shown


A-Jam Nut (2 used per Linkage Rod)
B-Linkage Rod (1 used per Control Valve)

CED,OUO1079,490 -19-21JUL00-2/3

5. Move rear windows to suit operator's preference.

6. Install backhoe lever console cover, cap screws, and rear floor mat.

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