PAGE 2-4
CHAPTER 2 MAINTENANCE
NMC-WOLLARD
2021 Truax Blvd. Eau Claire, WI 54703 ● P: 715-835-3151● F: 715-835-6625 ● www.nmc-wollard.com
TML-704H Maintenance Lift Manual No. 310547
2 TROUBLE SHOOTING
2.3 HYDRAULIC POWER AND DISTRIBUTION SYSTEM
Trouble Symptom Electrical Hydraulic Mechanical Remarks
Limited or no hydraulic
power, and/or erratic
operation in all
functions
H1,H2 M1 P1
H5
H7, H13 RV1
H14, H15 P1
H30 CV2
Hydraulic oil foaming H4, H5
H6, H15
Noisy engine pump H2, H5
H7, H10 RV1
H14, H15 M1 P1
Noise in vicinity of
reservoir
H2, H3, H5
Hydraulic oil milky or
discolored
H4, H6
Hydraulic system running
hot
H1, H7
H9, H14
H16
Hydraulic oil reservoir level
uctuates more than 1”
when platform is raised or
lowered
H1
H9, H29 PC2
Engine “backs down” or
stalls when cylinders are
bottomed out or while
accelerating
H7, H9 RV1
Electric pump will not run E2 Power
cable
E1, E2 Fuse 15FU
E2, E4 Wiring, J5
E2, E5 SW14,SW15
E2, E3 CR9
E7, E9 CR9
E16, E27,
E28
M10, M19
Pump/Motor
Electric pump “backs
down” excessively when
cylinders are bottomed
out or platform is being
lowered
H7, H9 RV2
E2, E3 Power
cables
E9 CR9
E20, E21 Battery
E26, E27,
E28
M19 EM
SEPTEMBER 01, 2015
Property of American Airlines
To Next Page
Loading...
Need help?
General