Cub Cadet 8454 Service Manual download pdf (Page 241)

HYDRAULIC SYSTEM

6-47

D569-W02 May-2003

3. POWER STEERING SYSTEM

3.1 TROUBLESHOOTING

1) Orbitrol unit

(1) Deflected center from the column.

(2) Abrasion due to dust on spool or

sleeve.

(3) Excessive tightening torque of

bolts (7 places) on end cover.

2) Pump

(1) Incapable drive.

(2) Worn out or in error.

(3) Defectively rated.

3) Relief valve

(1) In error (defective operation).

(2) Low pressure set.

1) Orbitrol unit

(1) Abrasion due to dust on spool or

sleeve.

(2) Deflected center from the column.

1) Orbitrol unit

(1) Air flowed in the gerotor, inlet or

engagement parts due to long

term unemployed.

2) Cylinder

(1) Air flowed in.

(2) Piston seal damaged.

1) Orbitrol unit

(1) Improper adjustment of valve

timing (when dismantling and

reassembling).

2) Pipe

(1) Improper piping of port 4.

1) Oil seal worn out

(1) Contaminated delivering oil.

2) O-ring damaged

(1) Damaged when dismantling and

reassembling term unemployed.

• Correct (cause if the tightening bolt

with orbitrol is loosened free).

• Replace

• Tighten at the torque as specified

evenly.

• Repair

• Replace

• Reset pressure and oil amount.

• Replace

• Reset

• Replace

• Correct

• Bleed air

• Bleed air

• Replace

• Correct

• Correct

• Replace

• Replace

Symptom Probable Cause Solution

- Steering wheel is

heavy to operate

- No returning to neutral

even if hand is off

steering wheel or

turning as it pleases

- Defective or incapable

operation of the

cylinder against the

turning of steering

wheel

- Steering wheel turns

reversibly

- Oil leakage

1.Shaft area

(circumference of

spline in spool)

2.Assembled area

(among housing,

spacer plate, gerotor

and end cover)

www.mymowerparts.com

K&T Saw Shop 606-678-9623 or 606-561-4983

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