JLG 1250AJP Service Manual - Manual (Page 380)

SECTION 5 - HYDRAULICS
5-26 – JLG Lift – 3121171
5.5 HYDRAULIC RETURN FILTER
Check the hydraulic return filter indicator with the hydrau-
lic oil at normal operating temperature and the engine run-
ning. Replace the filter element before the indicator
reaches the red filter restricted area or every 300 hours,
whichever comes first.
A - Red = Filter Restricted; Filter Bypassed
B - Green = Filter Good; Not Restricted
Figure 5-29. Hydraulic Return Filter Condition Indicator - Prior to S/N 139396
Red = Filter Restricted; Filter Bypassed
Green = Filter Good; Not Restricted
Figure 5-30. Hydraulic Return Filter Condition Indicator - S/N 139396 to Present