VARIOUS SHOTS HUGE COMMERCIAL ENGINE NEEDING INSTALLMENT OF A CYLINDER HEAD. VIEW SHOWS OPEN CYLINDER HEAD ON ENGINE.

CU SHOT MECHANIC LOWERING THE HEAVY CYLINDER HEAD UNIT WITH THE USE OF A CHAIN LIFT AND ANOTHER MECHANIC.

ABOVE VIEW - HAIRY-ARMED MECHANIC BEGINS THE STEP BY STEP INSTALLATION. 1ST HE LOWERS LINER TO HEAD GASKET. (THIS CAN ONLY BE DONE ONE WAY ONLY. MAKE SURER THE MOTOR STUDS LINE UP WITH THE HOLES IN THE GASKET.

MECHANIC NOW INSTALLS THE SYNTHETIC RUBBER RING OVER THE SEAT RING.

THE MECHANIC AND HELPER, WITH AIDE OF CHAIN LIFT, LOWERS THE UPPER HEAD INTO POSITION OVER THE LINER STUD. CU MECHANIC'S HAIRY ARMS AND FINGERS REMOVES THE HEAD-LIFTING TOOL AFTER HEAD IS INPALCE.

CU MECHANIC'S HANDS REMOVES THE RUBBER BASE FROM THE BASE OF THE OLD CRAB STUDS, THEN HE WIPES THE BASES WITH A CLOTH..

CU MECHANIC PUTS THE CRABS IN PLACE SO THERE IS ROOM FOR THE LINER SUB-NUT SOCKET. (IF THE CRABS ARE REVERSED, THERE WON'T BE ROOM). HE THEN OILS THE SEATS ON THE CRABS WITH OIL CAN.

MECHANIC SCREWS DOWN THE CRAB NUTS BY HAND AS SHOWN, THEN BRINGS THEM DOWN SNUG BEFORE TIGHTENING THE LINER NUTS.

MS WITH THE ASSISTANCE OF HIS AIDE, THE MECHANIC USES A VERY LONG (ABOUT 4-5 FEET) WRENCH AND BOTH USE ALL THEIR STRENGTH TO TIGHTEN THE CRAB NUTS. THIS IS THE FINAL TIGHTENING TO MAKE SURE THEY ARE SECURE.

MS MECHANIC AND AIDE, USING LONG ARMED WRENCH TIGHTENS CRAB NUTS AND LINER NUTS ON THE OTHER SIDE OF THE ENGINE, IN THE SAME WAY AS PREVIOUSLY SHOWN AND EXPLAINED.

CU HANDS OF MECHANIC PUTS THE INJECTOR IN PLACE ON THE HEAD AS SHOWN. HE THEN PUTS ON THE WASHER AND NUT, THEN TIGHTENS THE INJECTOR CRAB NUT. CU HE THEN CHECKS THE LAG FOR "FREE TRAVEL", AS SHOWN.

CU MECHANICS HANDS AND HAIRY ARMS SHOWS THE FUEL LINE BEING ASSEMBLED. HE INSPECTS THE BALL JOINTS FOR SCRATCHES AND BURS AS SHOWN. CU SHOTS OF ASSEMBLY BEING PUT IN PLACE AS VOICE OVER EXPLAINS. CU HE TIGHTENS NUTS.

CU NEXT, MECHANIC INSTALLS THE ROCKER ARM LEAD OIL LINE. GASKETS ARE USED AT BOTH CONNECTIONS AS SHOWN. HE USES THE LONGER SCREWS TO FASTEN THE LINE
TO THE CAMSHAFT BERING CAP. SHORTER SCREWS ARE USED AS SHOWN. HE TIGHTENS THE CAP SCREWS WITH OPEN END WRENCH, INSTALLS SAFETY WIRING.

HE MANUALLY TURNS THE ENGINE OVER AT PROPER SPOT ON FLYWHEEL AS SPECIFIED ON THE ENGINE INSTRUCTION BOOB AS SHOWN AND EXPLAINED BY VOICE OVER. HE THEN GETS UP, TAKES TOOL FROM TOOL TRAY,GOES BACK TO WORK ON HEAD.

NEXT, HE LOOSENS THE LOCK NUT ON ADJUSTING SCREW AS EXPLAINED AND SHOWN. HE TESTS THE ADJUSTMENTS AS SPECIFIED IN THE ENGINE INSTRUCTION BOOK. HE MAKES OTHER ADJUSTMENTS WITH WRENCH AND SCREW DRIVER AS SHOWN.

MECHANIC MOVES THE MANUAL CONTROL LEVER TO FULL THROTTLE AND MAKES SETTING AS SHOWN..HE REACHES FOR WRENCH IN TOOL TRAY ON FLOOR AND GOES BACK TO MAKE ADJUSTMENTS ON HEAD.

CU MECHANIC SETS THE ETTING AT THE GAUGE AGAIN . NOW THE TEST VALVE CAN BE INSTALLED CU SHOT TEST VALVE IN HAND OF MECHANIC AS HE REMOVES THE STEM OF THE CHECK VALVE AS SHOWN.

MS MECHANIC GETS DOWN ON ONE KNEE AND PREPARES THE KEY PIPE FOR ASSEMBLY AT BOTTOM OF ENGINE IN B/G. CU KEY PIPE ASSEMBLY WITH 2 SIZE SCREWS.SCREWS AND SAFETY WIRE, AS SHOWN. CU TWO SETS OF CAP SCREWS, ONE SET OF LOCK WASHERS.

KEY PIPE IN HAND, MECHANIC GETS ON HIS BACK TO ATTACH KEY PIPE TO MANIFOLD. CU SHOT MECHANIC'S FINGERS ATTACHING THE PIPE AS SHOWN AND EXPLAINED BY VOICE OVER. CU HANDS TIGHTENING CAP SCREWS USING BOX WRENCHES. INSTALS LOCK WIRING AS SHOWN.

MECHANIC ON HIS BACK WORKING AT THE MANIFOLD AS HIS ASSISTANT ON HIS KNEES AT THE OTHER END TURNS OVER MOTOR BY HAND SO MECHANIC CAN MAKE ADJUSTMENTS ON HIS END AS SHOWN AND EXPLAINED BY VOICE OVER.