JLG G6-42A Operator Manual - Manual (Page 53)

Form No. 20036 • G6-42A Owner/Operator Manual
Lube No. of
Symbol Points
Daily or Shift (10 hour Maximum)
Lubrication & Maintenance
12.Air Cleaner Element Condition Indicator (check
for clogged condition (red band showing) and
clean or replace element as required) - 1
13. Hydraulic Return Filter Condition Indicator
(check indicator with oil at normal operating
temperature and engine running at full throttle -
replace filter element before by-pass indication
is reached or at least annually) - 1
15. Transmission Fluid Level HF 1
18. Hydraulic Level Sight Gauges (level handler,
retract all other cylinders and check sight gauges
- refill as required) HF 1
19.Engine Crankcase Dipstick (level handler and
check fluid level - refill as required EO 1
30. Fuel Filler Cap (fill at end of work shift to
minimize condensation) DF 1
Weekly (or 50 Hour)
Lubrication & Maintenance
(include all previous periodic services)
4. Extend/Retract Chain Sheaves HM 3
5. Boom Bottom, Front Slide Bearings (extend
boom fully and lube all wear paths - retract and
extend boom fully three times and wipe excess
lube from bearings) HM 4
11. Sway Cylinder Pivots HM 2
14. Battery (check terminals) - 1
22. Fuel Filter/Water Separator (with Drain)
(replace element) - 1
24.Radiator Fill Cap (check level and refill as
required - refer to John Deere Manual for
coolant conditioner ratio) - 1
28.Boom Lift Cylinder Pivots H M 2
31.Tires (check for damage and proper inflation)
13.00 x 24, 12 ply - 445 kpa (65 psi)
13R24, 12 Ply - 482 kpa (70 psi)
15.5-25, 12 Ply - 400 kpa (58 psi) - 4
32.Boom Pivots H M 2
33.Compensating Cylinder Pivots H M 2
37.Carriage Tilt Cylinder Pivots H M 2
38.Boom Head/Carriage Pivot H M 2
39.Quick Switch Latch H M 1
At End of First 50 Hours Only
10. Differential Drain Plug (drain and refill) HF 2
20. Special engine break-in oil (drain & refill)
(replace filter) EO 1
35. Planetary Drain Plugs (drain while draining
differential) HF 4
15. Transmission Oil & Filter (drain & refill)
(replace filter) HF 1
At End of First 30 Days Only
(250 Hours Maximum)
Lubrication & Maintenance
• Check torque of all items listed in Torque Chart (pg 17.3)
17.2
DETAILED SERVICE INSTRUCTIONS ARE CONTAINED IN THE GRADALL SERVICE
MANUAL FOR YOUR PARTICULAR MATERIAL HANDLER
Lube No. of
Symbol Points
5 Week (or 250 Hour)
Lubrication & Maintenance
(include all previous periodic services)
1. Boom Front Top and Side Slide Bearings
(extend boom fully and lube all wear paths -
retract and extend boom fully three times and
wipe excess lube from bearings) HM 12
2. Boom Rear Slide Bearings (lube paths) HM 12
3. Boom Extend Chain (check adjustment and
adjust as required) - 2
5. Boom Front Bottom Slide Bearings (to be
performed by experienced maintenance person
- check for damage and excessive wear - no
wear permitted past bevel - maximum clearance
at top bearings is 3mm (1/8 inch), shim or replace as
required; when these bearings require service,
check all other slide bearings - shims
are 1.5mm (1/16 inch) thick - 4
6. Axle Kingpins H M 8
7. Axle Level Plug (check level and refill
as required) HF 2
8. Axle Trunnions HM 4
20. Engine Crankcase Filler Cap (drain oil and refill
top level) EO 1
21. Engine Oil Filter (replace filter element) - 1
23. Drive belts (check condition - replace as
required) - 1
27. Drive Shaft Slip Joints HM 4
29. Vacuator Valve (rubber cone on bottom - check
to be sure cone is clear and undamaged) - 1
35. Planetary Level Plug HF 4
36.Transfer Case (check and top off) H F 1
• Check torque of all items listed in Torque Chart (pg 17.3)
Quarterly (or 500 Hour)
Lubrication & Maintenance
(include all previous periodic services)
16. Hydraulic System (we recommend that
hydraulic fluid be analyzed to determine
condition - drain and refill reservoir if required HF 1
17. Hydraulic Reservoir Screen (remove, clean,
and install when hydraulic oil is drained) - 1
22. Fuel Filter/Water Separator (with Drain)
(replace element) - 1
Semi-Annual (or 1000 Hour)
Lubrication & Maintenance
(include all previous periodic services)
9. Hyd. Tank Filter/Breather (replace) - 1
10. Axle Drain Plug (drain and refill) HF 2
15. Transmission Drain Plug (drain, fill to level,
replace filter) HF 1
32. Rear Hub Drain Plug (drain and refill) HF 2
35. Planetary Drain Plugs (drain while draining
differential) H F 4
36. Transfer Case (drain & refill)
Annual (or 1500 Hour)
Lubrication & Maintenance
(include all previous periodic services)
13. Hydraulic Return Filter (replace filter element) - 1
16. Hydraulic System (unless fluid is analyzed
quarterly to determine degree of contamination,
reservoir must be drained and refilled on an
annual basis) HF 1
17. Hydraulic Reservoir Screen (remove, clean,
and install when hydraulic oil is drained) - 1
24. Engine Cooling System (drain, flush and refill
on basis of period suggested by anti-freeze
manufacturer and add Liquid Coolant Additive
refer to John Deere manual for coolant
conditioner ratio) - 1
Service intervals are based on machine usage of 1500 hours
annually. Use of your unit may vary significantly and you must
adjust service frequency for your usage to obtain maximum
service life. Frequency headings in the following schedule
indicate a calender limit and an operating hour limit. Perform
service at whichever interval occurs first.
CAUTION !