JLG 67SL Service Manual - Manual (Page 29)

SECTION 2 - GENERAL
3121322 – JLG Lift – 2-9
f. Fuel Filter
• Maintenance - Replaceable Element
(JLG P/N 7020023)
• Interval - Change every year or 600 hours of operation,
whichever comes first.
9. Fuel Tank
• Capacity - 23.8 gal (90 L)
• Lube - Diesel Fuel
• Interval - Check fuel periodically during each use
2.5 CYLINDER DRIFT TEST
Maximum acceptable cylinder drift is to be measured
using the following method.
Lift Cylinder Drift
NOTE: Test cylinder drift with machine oil at ambient tem-
perature.
1. Place maximum work load onto platform (Refer to
Table 1-1, Operating Specifications).
2. Extend lift cylinder to achieve a platform height 3 to
5 meters from fully stowed.
3. Wipe cylinder rod clean and place a mark on the rod
50mm from the cylinder head.
4. Wait 15 minutes.
5. Measure distance of mark from head.
6. Difference (cylinder drift) must not exceed 3mm.
NOTE: If cylinder drift exceeds 3mm, repeat test. If still
greater than 3mm, check holding valve (refer to Fig-
ure 4-41., Lift/Lower Valve Block). If still greater than
3mm, replace cylinder seals (refer to Section 4.4,
Cylinder Repair).