Jacobsen HR5111 User Manual

DRIVE TRAIN
SECTION 4B. FAILURE ANALYSIS
4B-1
4B
PROBLEM PROBABLE CAUSE REMEDY
1. Differential lock does a. Torque on drive line. a. Stop tractor.
not disengage.
b. Differential lock collar jammed. b. Repair (Section 4E).
c. Faulty differential lock piston. c. Repair (Section 4E).
d. Tractor in a turn. d. Stop tractor.
e. Differential switch faulty. e. Test (Section 10G).
f. Differential solenoid valve f. Replace (Section 8K).
cartridge faulty.
2. No differential lock. a. Differential lock solenoid a. Check LED at solenoid.
faulty. ON — Faulty solenoid.
Check LED at solenoid:
OFF — (Electrical, Section 10B).
ON — See b, d, e.
b. Differential lock solenoid valve b. Replace (Section 8K).OFF — See a and c.
cartridge faulty.
c. Differential switch faulty. c. Test (Section 10G).
d. Faulty differential lock. d. Repair (Section 4E).
e. Differential lock collar jammed. e. Repair (Section 4E).
3. Wheel scuffs turf a. Differential lock engaged. a. Release.
on turns.
b. Differential not disengaging. b. See #1 above.
4. Noisy when tractor a. Excessive gear backlash. a. Adjust (Section 4E).
moving forward or
b. Faulty U-joints. b. Repair (Section 4D).
reverse.
5. Tractor does not go a. Faulty traction pedal linkage. a. Repair/adjust (Section 2C).
forward or reverse
b. Axle input shaft spline stripped. b. Repair (Section 4E).
when traction pedal
c. Hydro traction motor shaft c. Repair (Section 8I).is pushed.
spline stripped.
Does drive shaft turn?
d. Parking brake applied. d. Release (Section 2C).NO — See a, c, d, e.
e. Parking brake not releasing. e. Repair/adjust (Sections 5C/2C).
YES — See b, f.
f. Internal gear failure in axle. f. Repair (Section 4E).
6. Clunking sound when a. Axle drive U-joint faulty. a. Repair (Section 4D).
changing direction.
b. Excessive axle gear backlash. b. Adjust (Section 4E).

Jacobsen HR5111 Specifications

General

Brand	Jacobsen
Model	HR5111
Category	Lawn Mower
Language	English