Brake Check; Hold On Grade Test - Yale 524150797 Maintenance Manual

1800 YRM 1505
Figure 2. Discharging Controller

HOLD ON GRADE TEST

WARNING
DO NOT stand below or ride on the lift truck when
performing the hold on grade test.
The brake should be checked for hold capacity every
2000 hours or yearly or any time substandard brake
performance is suspected. Load a stable, full-capacity
load on the forks and position the lift truck at the base
of a 10-percent grade (1.0 m rise in 10.0 m (3 ft rise in
30 ft)) grade with the forks facing uphill. Standing to
the side of the lift truck, slowly drive the lift truck up
the grade and bring the lift truck to a stop using the di-
rectional controls (plugging). Move the control handle
to the BRAKE ON position to apply the parking brake.
See Figure 3. If the brake fails to hold the lift truck on
1. CONTROLLER
2. POSITIVE CONNECTION
3. INSULATED JUMPER WIRES
4. 200-OHM, 2-WATT RESISTOR
5. NEGATIVE CONNECTION

Brake Check

the grade, the brake assembly must be repaired or re-
placed. For instructions on repairing or replacing the
brake, refer to Brake Assembly Repair in this section.
1. CAPACITY LOAD
2. 10% GRADE
3. FORKS UPHILL
Special Precautions
Legend for Figure 2
Figure 3. Hold On Grade Test
3