allen AT14S, Operations & Parts Manual

Page: 49 / 124

065300 - 09/2016
Page 49
SECTION 3
SERVICE
General Maintenance (cont’d)
• With the vehicle stationary and the engine off, connect no.4 400 bar full scale gauges to points
“1”, “2”, “3” and “4” , start the endothermic engine and bring it to the max. power allowed (3200
rpm for the petrol engine and 3600 rpm for the diesel engine) .
• Operate the drive lever corresponding to the track to the service of which the gauge has been
connected, taking care to block the piloted track and progressively bringing the drive lever
completely forwards or backwards.
GAUGE POSITION CORRESPONDING GEAR RELATIVE TRACK PRESS. TO BE READ
1 forward right
220 ÷ 240 bar
2 reverse right
3 reverse left
4 forward left
• The gauge set at points “1”, “2” ,”3” or “4” must indicate a pressure of 250 bar .
ATTENTION!!!
WHEN TESTING THE 4 SERVICES, THE BOOST PRESSURE READ AT POINT
“5”
MUST REMAIN
UNALTERED, RANGING BETWEEN THE LIMITS INDICATED BELOW (22 – 24 bar) .
CHECK CHARGE PUMP PRESSURE
• With the machine stopped and engine off, connect up a pressure gauge with bottom scale val-
ue 40 bar to point “5” after which start the engine and run at max.rpm.
• Under these conditions, the shown pressure should be between 22 and 24 bar .
GAUGE POSITION FUNCTION PRESS. TO BE READ
5 Charge pump 20 ÷ 22 bar