Test 008: Testing Machine Cycle Times - jcb JS300 Service Manual

Service Operated
Machine
Bucket in
Bucket out
Arm in
Arm out
Boom up
Boom down
Swing left (5 revolutions)
Swing right (5 revolutions)
Creep - Forward (10 revs)
Creep - Reverse (10 revs)
Slow - Forward (20 revs)
Slow - Reverse (20 revs)
Fast - Forward (30 revs)
Fast - Reverse (30 revs)
Note: Cycle times are with the machine in H Mode with
hydraulic oil temperature of 50ºC and latest production
software and hardware settings. No quickhitch or
attachment fitted. Variation +/-0.2 seconds
1 Operate all services 10 times to ensure warm
hydraulic oil is circulated through all the services.
2 If the machine is fitted with HBCVs and any delay is
felt when operating dipper in, then the HBCV must be
bled of any air and the test repeated.
E-260

Test 008: Testing Machine Cycle Times

Hydraulic System Fault Finding
Test 008: Testing Machine Cycle Times
Table 19.
Time (seconds)
JS300 JS330
4.0 3.8
2.9 2.5
4.0 4.6
3.0 3.4
2.9 3.5
2.9 2.8
31.6 34.0
31.6 34.0
38.0 37.6
38.0 37.6
56.0 51.2
56.0 51.2
52.0 51.3
52.0 51.3
9813/5100-1
Section E - Hydraulics
JS370
4.6
3.0
5.4
3.8
3.7
3.2
33.0
33.0
39.6
39.6
56.5
56.5
47.9
47.9
E-260