JLG M4069 ANSI Service Manual - Manual (Page 52)

SECTION 3 - CHASSIS & SCISSOR ARMS
3-24 – JLG Lift – 3121122
Power Controller
3.7 TOWING
Disengaging for Towing
PRIOR TO OPERATING THE DISCONNECT THE MACHINE HAS TO
BE ON LEVEL GROUND AND COMPLETELY SECURED FROM ANY
MOVEMENT, I.E. VIA TOW BAR TO PULLING VEHICLE. THE
MACHINE SHOULD NOT BE MOVED UNLESS IT IS SECURED TO
THE TOWING VEHICLE TO PREVENT RUNAWAY.
ENSURE THE DISCONNECT MECHANISM IS ONLY OPERATED
WITH THE MACHINE AT A STANDSTILL.
THE GEAR DRIVE TEMPERATURE SHOULD BE CHECKED PRIOR
TO ANY WORK BEING DONE. THIS IS IMPORTANT IF THE GEAR
DRIVE HAS RECENTLY BEEN OPERATED SINCE IT MAY BE HOT
AND CAUSE INJURY.
ENSURE THE AREA SURROUNDING THE DISCONNECT IS
CLEANED PRIOR TO OPERATION. ENSURE THAT DIRT OR
OTHER CONTAMINANTS DO NOT ENTER THE GEAR DRIVE.
1. Remove the two hex head bolts from the cover.
2. Remove the cover.
3. Rotate the cover to show the inside diameter.
Table 3-13. Power Controller Cable Descriptions
From To
Power Controller F2 Right Side Drive Motor F1
Right Side Drive Motor F2 Left Side Drive Motor F2
Power Controller F1 Left Side Drive Motor F1
Power Controller S Left Side Drive Motor A2
Right Side Drive Motor A1 Left Side Drive Motor A1
Power Controller A Right Side Drive Motor A1
Left Side Drive Motor A2 Right Side Drive Motor A2
Power Controller B+ Contactor ++
Figure 3-14. Power Controller