CONNECTING RODS, PISTONS, RINGS & SLEEVES - CONT

CONNECTING RODS, PISTONS, RINGS & SLEEVES - CONT - TM-5-3820-256-24-5_257

CONNECTING RODS, PISTONS, RINGS & SLEEVES - CONT - TM-5-3820-256-24-5_259

TM-5-3820-256-24-5 Drilling System Well Rotary Truck Mounted Air Transportable 600 Feet Capacity Model LP-12 NSN 3820-01-246-4276 Manual
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SERVICE MANUAL CONNECTING RODS, PISTONS, RINGS & SLEEVES Section 5 NOTE: If bolts will not screw in by hand, re-clean the rod threads and try a new bolt. If a new bolt does not screw in freely, the rod must be discarded. Whenever new bolts are used in a rod, they must be torqued to 175 N•m (130 lb-ft), loosened, and retorqued three times. Figure 33. - Connecting Rod and Piston Marking in Relation to the Camshaft 1. Numbers face away from camshaft. 2. Markings on top of piston face toward camshaft. 8. Install the remaining rods and pistons in the same manner. NOTE: The connecting rod bearings must be fitted. Bearing clearance checked and connecting rod end play checked, as outlined previously in this section, prior to continuing with engine assembly. 9. Install cylinder head & valves as described in Section 3. NOTE: Whenever the cylinder head is removed valve lash must be adjusted as described in Section 3. 10. Install Manifolds and Turbocharger (if equipped) as described in Sections 2 and 1 respectively. 11. Install the oil pan with a new gasket. 12. After installation of new pistons and/or new piston rings, the engine must be “RUN-IN” as follows: NOTE: Do not run the engine at low or high-idle speeds for ‘long periods after installing new rings or sleeves, as rings will not seat during idle operation. a. Install the necessary diagnostic instruments similar to procedures outlined in diagnostic manual ISS-1526-3 for construction equipment, CGES-240 for OEM and On Highway Truck, GSS-1460 and GSS-1482 for Agricultural Equipment. Fill engine crank-case with lubricating oil as specified in specific operation and maintenance manual. b. Perform a 60 minute (minimum) DYNAMOMETER or IN-VEHICLE Run-In Procedure as follows: -ENGINE RUN-IN SCHEDULE- 1. Motor engine (w/dynamometer) or idle Engine (In-vehicle) at “No Load” @ 550-600 RPMI and check for leaks in water, lube oil, fuel and air- induction systems. Time required: 5 minutes. 2. Operate engine at 3/4 rated speed (RPM) and 1/2 rated load for that speed. Time required: 5 minutes. 3. Operate engine at ¾ rated load and rated speed (RPM). Time required: 5 minutes. CGES-185-3 PRINTED IN UNITED STATES OF AMERICA Page 29

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