Jacobsen HR5111 User Manual

HYDRAULICS
SECTION 8B. FAILURE ANALYSIS
8B-1
8B
PROBLEM PROBABLE CAUSE REMEDY
TRACTION SYSTEM
1. Forward and reverse a. Dump valve not closed. a. Close valve.
slow (2 WHD).
b. Parking brake applied. b. Release.
c. Traction linkage damaged or out c. Adjust/repair (Section 2C).
of adjustment.
d. No or little charge pressure. d. Test (Section 8R).
e. Faulty traction pump. e. Test (Section 8R).
f. Faulty traction motor. f. Test (Section 8R).
g. Faulty traction loop relief g. Test (Section 8R).
valve(s).
2. No forward or reverse a. Dump valve not closed. a. Close dump valve.
(2 WHD).
b. Traction linkage damaged. b. Repair/adjust (Section 2C).
c. No or little charge pressure. c. Test (Section 8R).
d. Faulty traction pump. d. Test (Section 8R).
e. Faulty traction motor. e. Test (Section 8R).
3. No forward or slow, a. Traction linkage damaged or a. Repair/adjust (Section 2C).
reverse OK. out of adjustment.
b. Faulty traction loop relief b. Test (Section 8R).
valve(s).
4. No reverse or slow, a. Traction linkage damaged or a. Repair/adjust (Section 2C).
forward OK. out of adjustment.
b. Faulty traction loop relief b. Test (Section 8R).
valve(s).
5. No charge pressure. a. No hydraulic fluid in tank. a. Check (Section 11).
b. Faulty pump Section 4. b. Test (Section 8R).
c. Faulty charge relief valve. c. Test (Section 8R).
6. No 4 wheel drive. a. Faulty cartridge valve. a. Replace (Section 8K).
Check LED in 4 wheel b. Faulty pilot valve in 4 wheel b. Replace (Section 8F).
drive solenoid plug: drive valve.
ON — Switch solenoid c. Faulty 4 wheel drive control c. Repair/replace (Section 8F).
with differential lock valve spool.
solenoid. Still no 4
d. Insufficient charge pressure to d. Test (Section 8R).
wheel drive, see a to f.
activate 4 wheel drive valve.
OFF — See g.
e. Faulty 4 wheel drive pilot valve e. Replace (Section 8F).
spool.
f. Rear traction motor(s) excessive f. Test (Section 8R).
internal leakage.
g. Faulty electrical circuit. g. See Section 10B.

Jacobsen HR5111 Specifications

General

Brand	Jacobsen
Model	HR5111
Category	Lawn Mower
Language	English