Knight Hawk Supply
Your One-Stop Hydraulic Source
Commercial Intertech Series C101 and C102 Combination Pump/Valves
Repair Parts, Hydraulic Pumps, Motors and Valves

39 & 48 gpm @ 1800 rpm
Pressures to 2500 psi
Speeds to 2400 rpm
Choice of mountings
Air remote operators available
Relief valve protects pump & cylinder

G101/G102
9.5, 21 & 29 gpm @ 1800 rpm
Pressures to 2500 psi
Speeds to 2400 rpm
2- or 3-line installations
Choice of mountings
Air remote operators available
Relief valve protects pump & cylinder

G104/G105
9.5, 21 & 29 gpm @ 1800 rpm
Pressures to 2500 psi
Speeds to 2400 rpm
3- or 4-line installations
Choice of mountings
Air remote operators available
Main relief valve protects pump & cylinder when valve spool is in either work position
Optional cylinder port relief valve for lower position

Commerical dump body pump/valve products deliver the right flow range for most applications at 1800 rpm/2000 psi. Models with two shafts (C101/G101/G104) can be mounted to remote PTO’s operating in either direction of rotation. Single shaft units (C102/G102/G105) mount directly to the vehicle drive train. All (except G104/G105 models) can be connected in two- or three-line circuits to control single-acting cylinders. The G104/G105 range offers the choice of three- or four-line hookups and a three, or detented fourth, position valve for use with double-acting cylinders. All units are supplied with factory-set 2000 psi relief valves.

Commercial’s pump/valve family offers the broadest choice of flow ratings; these units provide the most reliable, troublefree control for dump trucks. Commercial’s dump body pump/valve products deliver the right flow range for most applications at 1800 rpm/2,000 psi. Models with two shafts (101’s/ 104’s) can be mounted to remote PTO’s operating in either direction of rotation. Single shaft units (102’s/ 105’s) mount directly to the vehicle drive train. All (except G104/105 models) can be connected in two or three-line circuits to control single-acting cylinders. The G104/105 range offers the choice of threeor four-line hookups and a three, or detented fourth, position valve for use with double-acting cylinders. All units are supplied with factory-set 2,000 psi relief valves.
Note: G104/105 units are for installations requiring 3- 4-line hookup and 4-way control valves.
A: Two- or Three-line Hookup
B: Remote Valve Actuation
C: Factory Set Rotation
D: Either Shaft Rotation
E: 1.00” diameter Keyed Shaft
F: SAE “B” Splined Shaft (13 teeth, 16/32 pitch)

All 102 and 105 units can be ordered for either direction of rotation from the factory; all 101 and 104 units can be field set for either direction of rotation.

Performance Curves
Average Pump Output @ 2000 psi Performance data shown are average results based on a series of production units and are not representative of any one unit. Tests were run with the oil reservoir temperature at 120ºF, viscosity of 150 SUS at 100ºF.


Air Shift Kits
All dump units can be shifted from the cab by cable or by air with our Air Shift kit. The kit consists of an air cylinder that mounts on the valve unit, a pneumatic control valve that mounts in the cab, 30’ of air hose and all necessary connections. A minimum of 80 psi air pressure is required which can be taken off the brake system or on-board compressor. The shifter can easily be retro-fit to existing pump/valve units by following the simple instructions with each kit.




Warning
These warnings apply to all pump/valve units.
A device to lock the control lever in the neutral position must be installed. Pump/valve units without a lockable control lever may allow the dump bed to rise unintentionally while in transit. Failure to provide such a lock may lead to loss of vehicle control, accidental injury and/or property damage.
Failure to disengage the PTO from driving the pump/ valve when in transit may allow the dump bed to rise unintentionally. This may lead to loss of vehicle control, accidental injury and/or property damage.
Commercial’s pump/valves are equipped with a neutral stop device for those applications using a pull-out cable. This device allows the pull-out cable to move the valve spool from the raise to the neutral position only. Since shock loading in the cable is possible, it is essential that a spring (Commercial’s part no. 391-3581-854 or equal) be incorporated in the pull-out cable hookup. Failure to do so could result in breakage of the neutral stop device and could lead to injury. We recommend that the cable be fully enclosed and directly in line with the spool.
Never work under a raised dump bed without first securely blocking the bed to prevent its accidental lowering.
Three-line installations are recommended whenever possible. Three-line circuits consist of a pump inlet line, a line to the cylinder and a return line to tank. A sleeve must be installed in the pump’s inlet to allow oil to circulate through the unit and return to tank when running in neutral. Lower operating temperatures and the ability to install a return-line filter are two advantages of a three-line circuit. Be sure the return line is always below the oil level in the reservoir. two-line installations are for intermittent operation only.
Typical Flow Paths in C101/C102 Pump/Valve Units

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Commercial Intertech parts and components