SERVICE MANUALThe cam ring can develop sharp edges from wear.Use a clean shop cloth to remove cam ring to avoidcuts. Remove ring by lifting straight up.17.Remove front end plate and discard gaskets. Removelocating pin.18.Remove housing-to-reservoir sealing gasket. Figure21.Fig. 21 Remove Gasket1Housing2Gasket19.Remove shaft oil seal with a screwdriver being carefulnot to scratch seal bore or housing bushing, Figure22.Fig. 22 Remove Seal1Shaft SealCLEANING, INSPECTION AND REPAIRWash all components in a non-toxic solvent, air dry andinspect individually as outlined below.Component InspectionHousing - Inspect drive shaft bushing in housing forburning, scoring or oversize condition. The bushing is notserviceable. If bushing is damaged, the housing must bereplaced.Inspect ball plug located near the valve cap. If plug hasblown out, it can be driven back in to a depth approximately6.35 mm (1/4 inch) below the cast surface.Pump Cover - Inspect drive shaft bushing in cover forburning, scoring or oversize condition. The bushing is notserviceable. If bushing is damaged, replace cover.Cam Ring - Inspect internal surface of cam ring for wearor scoring. Polish in some areas is normal, but any wearsevere enough to raise a noticeable burr on the edge of thecam ring I.D. indicates replacement is necessary.Shaft and Carrier Assembly - Inspect carrier on the endsof drive tooth faces for excessive wear or scoring. If ends areworn or scored or wear pattern on any of the roll drive faces isgreater than 2.3 mm (.09 in.) in width, the carrier must bereplaced. Carriers are not serviced alone, but can be replacedas part of a pumping element kit.Inspect the shaft for any excessive wear, burning, orscoring in the areas of the two bushings and the oil seal. Ifany of these conditions exist, replacement is required.Rolls - Inspect each of the twelve rolls for burning,scoring, or wear on the O.D. surface. End Plates - Inspectboth end plates for wear, cracks or scoring on the surfaceopposite the sealing O-rings. Any scoring indicatesreplacement is required.Flow Control Valve Assembly - It is difficult to visuallydetermine if a valve is defective. If the pump problem wasdiagnosed as low pressure, and the pumping element showsno sign of excessive wear, it is probable that the valve needsreplaced. The valve must fit and move smoothly in the valvebore.Pump Shaft Seal Installation1.Lubricate new shaft seal with same type of fluid asused in pump. Place seal on top of seal bore with metal sideof seal upward.CTS-4027 - Page 15
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
