SAF-HOLLAND XL-LG330-01 Challenger Series - Model 50000 - Manual (Page 3)

TROUBLE SHOOTING:
In normal trailer operating service, certain components such as shafts, bushings, bearings, gears, and
screw and nut assemblies are subject to wear and will require replacement.
However, under extreme usage condition exceeding AAR-931 Durability Requirements the same
components may require replacement more frequently.
Landing gears hard to crank–check the following:
PROBLEM SOLUTION
1. Cross driveshaft in a bind or tight Bolts must be loose and cross driveshaft free to
between shafts. move in slots provided.
2. To determine which leg turns hard Remove cross driveshaft bolt and crank each leg
on the jack shaft.
3. Inadequate lubrication. (See Lubrication Instructions).
4. Alignment. Legs must be timed together, parallel to each other
and perpendicular to the trailer crossmembers.
5. Upper housing or retracting tube may be bent. Replace damaged part.
6. Screw and nut assembly may have excessive Disassemble and inspect for wear. If screw and/or
wear and be hard to turn or inoperable. nut show considerable wear, then replace entire
retracting tube assembly.
7. Check for proper clearance between pinion Minimum end play 1/32˝.
and bevel gear.
8. Excessive wear or damage to pinion, bevel, Replace damaged gears.
input, idler and/or output gears.
9. Landing gear jack shafts and/or shift shaft Check to see if trailer mounting bracket has
binding. sufficient size clearance hole to miss landing gear
boss or shift shaft.
10. Bent retracting screw. Replace entire retracting tube assembly.
11. Damaged thrust bearing. Replace.
12. Damaged collar. Replace.
13. Damaged shift lock boss and/or shaft Replace.
bearing boss.
14. Weld blow through where strut bracket is Grind weld as required and re-weld.
welded to housing. (With no-load on landing
gear, the retract tube should have free play
inside housing.)
15. Impact to jack shaft end has pressed bearing Press boss back into position.
boss into gearbox half.
Trouble Shooting/General:
1. Right-hand leg (gearbox leg) operates but Broken cross driveshaft bolt or damaged cross
left-hand leg does not move. driveshaft. Replace damaged part.
2. Legs will not operate when turning jack shaft. Damaged pinion or bevel gear. Replace damaged part.
3. Right-hand leg will not operate, shift shaft Damaged input, idler, and/or output gear. Replace
will turn but jack shaft does not turn. damaged part.
4. Leg locked and will not turn. Bent retracting screw or damaged riser nut and
screw. Replace entire retracting tube assembly.
5. Right-hand leg will not stay fully shifted in Shift lock ball and shift lock spring missing or
low gear. damaged shift lock spring. Replace missing or
damaged part.
6. Noisy gearbox. Check that shift shaft movement is 1˝ when shifted
between gears.
3 XL-LG330-01 Rev. B