Mike in MI
Member
I bought a 1972 Case 646. It didn't have an engine when I bought it. Other owner said it had the CCKA 16.5 onan in it. Engine was bad an the cost too rebuild the old one he lost interest in it. I'm slowly getting it back togther. I had another onan engine from a JD 420 with the P220 and I just got it installed.
Problems I'm having is the hydraulic pump not having enought pressure for the Hydraulic motor on rearend. Gets worse as it oil warms up. I checked the pressure at one time it was 1900 psi cold at full throttle. Should be around 4000 psi.
The pump thats on it I believe the origanal pump yet with the 3/4 shaft dia. My question did the onan ccka 16.5 engine have a clockwise rotation or counter clockwise rotation? Looking at the shaft side on pump like would a face of a clock the arrow in the back of the pump shows the pump rotation going counter-clockwise.
Im going to buy a new hydraulic pump but having put in this P220 onan engine which I think has the clockwise crank rotation but doing need to buy the pump with the clockwise rotation or counter-clockwise rotation.
I looked up some pumps on some websites I found one on McMaster Carr Pt # 6296K27. On Northern-Tool Pt # WP09A1B100R03BA102N.
The pump I have maybe worn out or maybe the rotation going wrong direction? Any help on this is sure welcome too me!
Mike
Problems I'm having is the hydraulic pump not having enought pressure for the Hydraulic motor on rearend. Gets worse as it oil warms up. I checked the pressure at one time it was 1900 psi cold at full throttle. Should be around 4000 psi.
The pump thats on it I believe the origanal pump yet with the 3/4 shaft dia. My question did the onan ccka 16.5 engine have a clockwise rotation or counter clockwise rotation? Looking at the shaft side on pump like would a face of a clock the arrow in the back of the pump shows the pump rotation going counter-clockwise.
Im going to buy a new hydraulic pump but having put in this P220 onan engine which I think has the clockwise crank rotation but doing need to buy the pump with the clockwise rotation or counter-clockwise rotation.
I looked up some pumps on some websites I found one on McMaster Carr Pt # 6296K27. On Northern-Tool Pt # WP09A1B100R03BA102N.
The pump I have maybe worn out or maybe the rotation going wrong direction? Any help on this is sure welcome too me!
Mike