MIO-R290GM2011 Rev E
G&B Specialties Inc. 535 West 3
rd
Street, Berwick, PA, USA Tel: (570) 752-5901 Fax: (570) 752-6397
US Field Service: 570-441-6988; CAN Field Service 570-854-0482; www.rafna.com
-184-
S
ERVICE OF
H
YDRAULIC
K
IT
The hydraulic kit must be serviced regularly to avoid damage to the equipment.
The recommended oil for the railgear hydraulic system is DEXRON III or equivalent. In
extremely cold weather areas/seasons, Tellus S4 VX32 or equivalent may be used.
Table 1: Recommended Service Schedule
Service Required
Initial 100
km
(62 Miles) of
road and/o
r
rail u
se
Dail
y
Weekly
Monthly
Inspect hydraulic kit fasteners (re-torque if required)
Inspect all hydraulic fittings and hoses for leaks and wear.
Check oil in hydraulic reservoir. (fill with railgear raised if
req’d)
Check emergency hand pump and manifold over-ride operation
Hydraulic System Relief Valve Setting
This system is equipped with one relief valve located on the railgear pump body next to the
emergency hand pump. This relief valve protects the entire hydraulic system from over
pressurization. The relief valve will require adjustment if ever there appears to be
inadequate hydraulic pressure to operate the railgear.
1.
Disconnect the hydraulic hose from the “P” port of the pump.
2.
Install a hydraulic pressure gauge (up to 3000 PSI) between the disconnected hydraulic
hose and the pump port. The pressure gauge will indicate the relief valve setting when
the pump is loaded.
3.
The pressure reading on the pressure gauge should climb to 1800 PSI.
4.
If the pressure is not correct, release the railgear controls and adjust the relief valve on
the pump accordingly. Loosen the lock nut and turn the setscrew in to increase the
pressure or out to decrease the pressure. Re-check the pressure.
5.
Once the correct pressure on the pump relief valve is obtained, ensure the lock nut on the
relief valve is tightened. Release the pressure in the system and remove the pressure
gauge. Re-connect all hydraulic hoses.
6.
Ensure the railgear is properly raised as per the Railgear Kit Operation, Service and Parts
manual.
