JLG 510AJ Service Manual - Manual (Page 126)

SECTION 3 - CHASSIS AND TURNTABLE
3-84 – JLG Lift – 3121181
3.12 PERKINS ENGINE GENERAL MAINTENANCE
Replacing the Engine Crankcase Breather
KEEP ALL PARTS CLEAN FROM CONTAMINANTS. CONTAM-
INANTS MAY CAUSE RAPID WEAR AND SHORTENED COM-
PONENT LIFE.
1. Loosen screws (1) and remove breather cover (2) from
valve mechanism cover.
2. Remove spring (3). Remove diaphragm and plate (4).
3. Clean vent hole (6) and cavity (5) in valve mechanism
cover.
MAKE SURE THAT THE COMPONENTS OF THE BREATHER
ASSEMBLY ARE INSTALLED CORRECTLY. ENGINE DAMAGE
MAY OCCUR IF THE BREATHER ASSEMBLY IS NOT WORK-
ING CORRECTLY.
4. Install a new diaphragm and plate (4) for the breather
assembly into the cavity (5) of valve mechanism cover.
5. Install a new spring (3).
6. Install the breather cover (2) and the four screws (1).
Tighten the screws.
Engine Oil Level - Check
HOT OIL AND HOT COMPONENTS CAN CAUSE PERSONAL
INJURY. DO NOT ALLOW HOT OIL OR HOT COMPONENTS
TO CONTACT THE SKIN.
NOTE: Perform this maintenance with engine stopped.
1. Maintain oil level between "ADD" mark (Y) and "FULL"
mark (X) on oil level gauge (1). Do not fill the crankcase
above "FULL" mark (X).
NOTE: Operating your engine when oil level is above "FULL" mark
could cause your crankshaft to dip into the oil. Air bubbles
created from crankshaft dipping into the oil reduces the
oil's lubricating characteristics and could result in loss of
power.
2. Remove oil filler cap and add oil, if necessary. Clean and
install oil filler cap.
Engine Oil and Filter - Change
HOT OIL AND HOT COMPONENTS CAN CAUSE PERSONAL
INJURY. DO NOT ALLOW HOT OIL OR HOT COMPONENTS
TO CONTACT THE SKIN.
CARE MUST BE TAKEN TO ENSURE THAT FLUIDS ARE CON-
TAINED DURING PERFORMANCE OF INSPECTION, MAINTE-
N A N C E , T E S T I N G, A D J U S T I N G A N D R E P A I R O F T H E
PRODUCT. BE PREPARED TO COLLECT THE FLUID WITH
SUITABLE CONTAINERS BEFORE OPENING ANY COMPART-
MENT OR DISASSEMBLING ANY COMPONENT CONTAINING
FLUIDS.
DISPOSE OF ALL FLUIDS ACCORDING TO LOCAL REGULA-
TIONS AND MANDATES.
NOTE: Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened com-
ponent life.
1. Screws for the breather cover
2. Breather cover
3. Spring
4. Diaphragm and plate
5. Cavity
6. Vent hole
Figure 3-68. Crankcase Breather - Perkins