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Bar Oil Pump Adjustments 

The DH0144 bar oil pump (Fig. 7) is a single acting pump that can pump up to 32 cc, or 1.08 oz., of bar oil per cycle, 
enough for about 30 seconds of cutting. There is a hose connected to the selector valve manifold (Fig. 4, P4 page 6) 
that connects to the fitting (Fig. 7, hydraulic pressure in) on the bar oil pump. When a cut is started flow and 
pressure from the manifold pushes on the pumping rod and piston to force a metered amount of oil to the bar. Very 
little rotational adjustment is needed for the metering valve in Figure 7. Turning it clockwise reduces the speed oil is 
pumped and turning it counterclockwise increases the speed the oil comes out. If you run the tank out of oil you 
may need to prime the pump. To prime the pump remove the barrel nut and pull out the pumping chamber, 
pumping piston, and pumping rod. Fill the barrel with bar oil up to the vent hole. Reinstall the pumping rod 
assembly into the pumping chamber with care to not damage the rod seal. Reinstall the pumping chamber and 
pumping rod assembly into the barrel, with care to not damage the piston or the O-ring, and retighten the barrel 
nut. To reduce the chance of seal damage make sure the seals are oiled and wiggle in a circular motion as you push 
the parts together. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 7 

Summary of Contents for DH0626

Page 1: ...OPERATION AND PARTS MANUAL DH0626 11G36 Simple Saw System Information subject to change without notice...

Page 2: ...rsons working near this machine must wear eye protection and hearing protection Use extreme caution around the cutting chain It is sharp and may cause bodily harm or injury Petroleum products are used...

Page 3: ...allation 4 Hydraulic Connections 6 Chain Tension and Sharpening 7 Sprocket Removal and Replacement 8 Bar Oil Pump Adjustment 9 Operating Instruction 10 Parts and Service Information 10 Main Sub Assemb...

Page 4: ...es warranty This warranty does not cover normal wear from use damage from abuse or misuse damage from contamination damage from natural disasters fire damage or incorrect installation This warranty do...

Page 5: ...igure 3 can be changed as required for your installation Position the bar oil pump above the bar plate port when retracted and below the bar oil tank with the bar oil tank positioned so it is easy to...

Page 6: ...10 to 12 gallons per minute at 2000 psi from a fixed displacement hydraulic pump You must install the pressure relief valve between the hydraulic pump and the selector valve to keep from damaging the...

Page 7: ...We do not recommend using quick disconnects but if you choose to use quick disconnects in the tank line first consult the manufacture to determine the correct size to keep the back pressure low enoug...

Page 8: ...he shaft Watch that the Drive Key Fig 6 item 4 does not get lost To install the Sprocket slide the Sprocket Fig 6 item 1 over the motor shaft slide the Bushing Fig 6 item 2 onto the shaft with the Dri...

Page 9: ...e in Figure 7 Turning it clockwise reduces the speed oil is pumped and turning it counterclockwise increases the speed the oil comes out If you run the tank out of oil you may need to prime the pump T...

Page 10: ...ribed on page 7 The log being cut must be clamped prior to sawing Lowering the saw bar will allow the selector valve to shift starting the saw chain and pumping bar oil Returning the saw to the up sto...

Page 11: ...BLY 2 1 DH0144 BAR OIL PUMP ASSEMBLY 3 1 DH0152 BAR TANK ASSEMBLY 4 1 VH0014 3 4 NPT 2000 PSI RELIEF VALVE 5 1 HH0820 8 JIC SWIVEL RUN TEE 6 1 HH0942 TUBE REDUCER FM JIC TO M JIC 892 6 4 7 1 DH0143 24...

Page 12: ...12 DH0641 SIMPLE SAW ASSEMBLY...

Page 13: ...13 DH0144 BAR OIL PUMP ASSEMBLY...

Page 14: ...14 DH0152 BAR OIL TANK ASSEMBLY...

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