5)
Should you find it necessary to service the plunger assembly (16), you can do so by removing the
tension screw (16D). Inspect all parts and replace as necessary.
NOTE: In order to drive the pump from the side opposite the present shaft extension, simply
remove the valve casing from the crankcase and rotate the pump 180 degrees to the desired
position. Be certain to rotate the seal case as well, so that the weep holes are down at the six o’clock
position. Change the oil fill and the oil drain plugs. Refer to the repair instructions as necessary
for the proper assembly sequence.
Reassembly sequence of the ECHO Tec. high-pressure pump.
1)
Reassemble plunger (16) and the connecting rod (15) with wrist pin (17). Place assemblies in
crankcase (1). Install crankshaft through connecting rods, again being careful not to bend or
otherwise damage the connecting rods.
2)
Replace left and right side bearings (12A and 12B), if they were removed from the crankshaft. Be
certain the bearings are pressed all the way onto the shaft and completely into the crankcase.
Replace radial shaft seal (11) bearing cover with sight glass (7 and 8) and crankcase cover with O-
ring (3 and 4).
3)
If oil seals (19) were removed, replace with seal lip towards crankcase. Lubricate seal before
replacing.
4)
Replace seal case (20) with O-ring (21) over plungers. Generously lubricate O-ring and oil seal
before reassembly. Replace V-sleeve (23) over plunger.
5)
Generously lubricate V-sleeve (23). Assemble spacer and V-sleeve (23) into valve casing (26).
Assemble weep return ring and pressure ring (25 and 24) over plungers. Slide the valve casing over
plungers and seat firmly. Replace the eight-socket head cap screws (34) and tighten to 105 inch-
pounds in a crossing pattern.
6)
Replace the six O-rings (31) and the six-valve assemblies (32X).
Replace the six valve plugs with O-rings (32 and 33) and tighten securely with a 22mm socket
wrench to 33 foot-pounds.
7)
Fill crankcase with 7.5 ounces / 0.22 ltr of non-toxic, non-detergent SAE 90 gearbox oil.
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