User manual UNICROSS X-PRESS 300 CHARGER

[. . . ] ENGINE IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ENGINE CARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AIR CLEANERS, CARBURETORS, GOVERNORS AND LINKAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AIR CLEANERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] When reinstalling the rings, note the marks on the first and second rings in dictating the top of the ring. Stagger the ring end gaps to prevent compression loss. Use plenty of service classification SF - SJ rated oil to lubricate all friction surfaces during engine reassembly. INSIDE CHAMFER TO PISTON TOP UNDER CUT (DOWN) EXPANDER LOCATED BEHIND THE SECOND COMPRESSION RING AND BEHIND THE OIL CONTROL RING OFFSET PISTON INSTALLATION FOR OH180 VALVE OVERHEAD ENGINE. The connecting rod is assembled to the piston with match marks facing the mechanic and the arrowhead on the piston pointing to the right i. e. , arrowhead facing the push rod tube area. 34 SECTION 2. CONNECTING RODS When reinstalling a used connecting rod ALWAYS use new nuts on the bolts. These locking nuts will ensure that the torque will be retained when the connecting rod is replaced. The connecting rod must be installed with the match mark facing out of the cylinder, toward the P. T. O. This will ensure the correct positioning of the oil dipper. The heads of the through bolts must be seated tight against the machined shoulder on the connecting rod. Failure to check this may result in a false torque reading and premature failure. IMPORTANT Torque to correct specifications. View B shows the trough alignment in correct relation to the crankcase journal. The slinger should not be incorrectly assembled 180° out of phase. PTO TAPERED BEARING PRESS FIT, HEAT IN OIL TO INSTALL REMOVE GEAR BY PLACING PULLER JAW UNDER GEAR A CRANKSHAFT GEAR IS PRESS FIT AND POSITIONED WITH CHAMFERED TOOTH AWAY FROM COUNTERWEIGHT CRANKSHAFT GEAR INSTALLATION. Use an arbor press and suitable driver to press crankshaft gear into position. Keyway in crankshaft gear is to fit over gear pin and beveled tooth must face P. T. O. Crankshaft gear must fit tightly against shoulder. On engines equipped with Dyna-Static, the counterweight balance gear is installed between the crankshaft gear, spacer and the bearing. Keyway in counterbalance gear is to fit over gear pin and beveled tooth is in line with keyway. B PLUNGER TYPE PUMP Some vertical VH100 engines use a plunger-type oil pump to circulate lubrication. The oil is pumped up through a hole in the camshaft to a passage allowing the crankshaft and parts to be lubricated. OIL SPRAY OPENING CHAMFER AWAY FROM COUNTERWEIGHT AGAINST SHOULDER PLUNGER REMOVE GEAR BY PLACING PULLER JAW UNDER GEAR SUPPORT CRANKSHAFT AT COUNTERWEIGHT WHEN PRESSING ON GEAR 36 CHAPTER 6. CAMSHAFT, BEARINGS AND SEALS SECTION 1. When servicing engines, check the camshaft at the points indicated by the asterisks in figure. Examine the gear teeth for wear and damage. [. . . ] Ring Groove Width Oil Ring Groove Note: First Model Year was designated as an HH140, 150, 160. 71 Description Side Clearance Ring Groove Compression Ring End Gap Model OH120 Model OH140 Model OH150 Model OH160 Model OH180 U. S. Metric . 0015 . 038 . 0035 . 089 . 010 . 020 . 031 . 034 . 254 . 508 . 787 . 864 . 0015 . 0035 . 010 . 020 . 030 . 035 . 6235 . 6240 . 038 . 089 . 254 . 508 . 762 . 889 15. 837 15. 850 . 0015 . 0035 . 010 . 020 . 031 . 036 . 6235 . 6240 . 038 . 089 . 254 . 508 . 787 . 864 . 0015 . 0035 . 010 . 020 . 031 . 036 . 038 . 089 . 254 . 508 . 787 . 864 . 0015 . 0035 . 010 . 020 . 031 . 036 . 038 . 089 . 254 . 508 . 787 . 864 15. 837 15. 850 Top Piston Land Clearance Camshaft Bearing Diameter . 6235 15. 837 . 6240 15. 850 1. 3117 33. 317 1. 3167 33. 444 15. 837 . 6235 15. 850 . 6240 15. 837 . 6235 15. 850 . 6240 Cam Lobe Diameter Nose to Heel 1. 3117 33. 317 1. 3167 33. 444 1. 3117 33. 317 1. 3117 33. 317 1. 3117 33. 317 1. 3167 33. 444 1. 3167 33. 444 1. 3167 33. 444 CROSS REFERENCE LIST Craftsman Engine Model See Model 143. 626272 143. 630012 143. 630022 143. 640012 143. 640022 143. 640032 143. 640042 143. 640052 143. 650012 143. 650022 143. 650032 143. 660012 143. 660022 143. 670012 143. 670032 143. 670042 OH160 OH160 OH160 OH160 OH160 OH160 OH160 OH160 OH160 OH160 OH160 OH160 OH160 OH140 OH160 OH140 CROSS REFERENCE LIST Craftsman Engine Model See Model 143. 670052 143. 670062 143. 670072 143. 670082 143. 670092 143. 680012 143. 680022 143. 680032 143. 700012 143. 710012 143. 710022 143. 730012 143. 730022 143. 740012 143. 740022 143. 770022 OH160 OH160 OH160 OH140 OH140 OH140 OH140 OH160 OH180 OH160 OH140 OH160 OH140 OH140 OH160 OH180 "Torque specifications listed on this page should not be confused with the torque value observed on engines which have been run. Torque relaxation occurs on all engines from thermal expansion and contraction. The torque specifications take relaxation into account so a sufficient clamping force exists after an engine has been run. " 72 SECTION 4. [. . . ]