MAINTENANCE
3-13
285 MM191 (12---89)
LIFT ARM SPEED LIMITER
The lift arm speed limiter is present on multi-level
dump model machines. It limits the forward speed
the machine can travel when the hopper is raised.
The speed limiter should be adjusted whenever the
pump linkage is adjusted. The machine should not
travel more than 2 mph (3.2 km/h) with the hopper
raised.
The speed limiter consists of a roller bearing which is
mounted on the directional linkage, and a cam on
the lift arm. When the hopper is raised, the lift arm
turns placing the cam under the roller bearing. This
limits how far the directional pedal can be pressed,
limiting the machine speed.
To adjust the maximum limited speed, loosen the
roller bearing nut, reposition the roller bearing in its
mounting slot and tighten the nut.
A
B
C
D
02483
SPEED LIMITER BEARING
A. Speed Limiter Bearing
B. Retaining Nut
C. Pump Linkage
D. Lift Arm Cam
HYDRAULIC FLUID LEAKS
Fluid escaping at high pressure from a very small
hole can be almost invisible and can cause serious
injuries. Use a piece of cardboard or wood, rather
than hands, to search for suspected leaks.
A
B
C
00002
HYDRAULIC PINHOLE LEAK
A. Cardboard
B. Pinhole Leak
C. Magnifying Glass
If injured by escaping hydraulic fluid, see a doctor at
once. Serious infection or reaction can develop if
proper medical treatment is not administered
immediately.
WARNING: Leaking hydraulic fluid under
pressure can penetrate skin. Severe
infection or death can result. Do not use body to
locate leak. Use cardboard to locate leak.
Summary of Contents for 285
Page 1: ...r 285 Sweeper Scrubber ...
Page 6: ...ABOUT THIS MANUAL 285 MM191 12 89 d ...
Page 18: ...SPECIFICATIONS 285 MM191 12 89 1 2 ...
Page 22: ...SPECIFICATIONS 285 MM191 12 89 1 6 ...
Page 24: ...OPERATION 2 2 285 MM191 12 89 ...
Page 62: ...OPERATION 2 40 285 MM191 NIL ...
Page 76: ...MAINTENANCE 285 MM191 12 89 3 14 04644 HYDRAULIC SCHEMATIC LOW DUMP MODEL ...
Page 77: ...MAINTENANCE 3 15 285 MM191 12 89 04645 HYDRAULIC SCHEMATIC MULTI LEVEL DUMP MODEL ...
Page 103: ...MAINTENANCE 3 41 285 MM191 6 90 06187 ELECTRICAL SCHEMATIC AUTO SHAKER RFS ...
Page 104: ...MAINTENANCE 285 MM191 6 90 3 42 06187 ELECTRICAL SCHEMATIC AUTO SHAKER RFS ...
Page 134: ...APPENDIX 285 MM191 12 89 4 2 ...