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PRM 125 

WORKSHOP 

MANUAL 

 

Summary of Contents for PRM 125

Page 1: ...PRM 125 WORKSHOP MANUAL...

Page 2: ......

Page 3: ...for inaccuracies or the consequences thereof can be accepted by the manufacturer or the distributor who supplied the manual This manual contains proprietary information of PRM Newage Limited It is int...

Page 4: ...ed oils and oil filling 7 5 INSTALLATION 8 5 1 General 8 5 2 Checking the engine Flywheel Housing 8 5 3 Checking the Engine Flywheel 8 5 4 Mounting the Gearbox to the Engine 10 5 5 Alignment to Propel...

Page 5: ...8 Gearcase 17 9 7 Re assembly of gearbox 17 9 7 1 Input Shaft 17 9 7 2 Output Shaft see 9 7 5 for shimming procedure 17 9 7 3 Idler Shaft 18 9 7 4 Selector housing assembly 18 9 7 5 Shimming 18 9 7 6...

Page 6: ...wage Ltd direct quoting the serial number CLAIMS UNDER WARRANTY Claims for replacement of parts under warranty must always be submitted with the gearbox serial number to the distributor who supplied t...

Page 7: ...hen ordering spare parts the lower line is the Gearbox specification in the example given this translates as follows 125 D 2 First 2 digits Gearbox Model 125 Third digit Output Shaft configuration Fou...

Page 8: ...ithout labouring 1 GENERAL DATA 1 1Specifications Gear ratios ahead 2 04 1 2 47 1 3 06 1 Gear ratio astern 2 44 1 common POWER RATING MODEL AHEAD RATIO PLEASURE LIGHT COMMERCIAL BHP kW BHP kW 125D2 2...

Page 9: ...tate servicing 3 2 Gear train The helical Gear train is manufactured from high grade steel with all gears being case hardened for long life All shafts are supported on taper roller bearings which are...

Page 10: ...help find solutions to potential torsional problems but it is the ultimate responsibility of the person assembling the drive and driven equipment to ensure that they are torsionally compatible 5 2 Che...

Page 11: ...9 PRM 125 BASIC INSTALLATION DETAILS PRM 125 Figure 4 Intallation Details...

Page 12: ...l housing and tighten fully See fastening torque chart 10 2 5 5 Alignment to Propeller Shaft CAUTION Alignment between the propeller shaft and the mating flange on the gearbox output shaft is extremel...

Page 13: ...d whilst the hull is afloat otherwise there is a danger of the hull distorting because of an insufficient support over its surface If the engine and transmission are fitted before the hull is in water...

Page 14: ...upper hole Make sure the lever forward position corresponds to the forward movement of the vessel The following points should be noted i The gearbox operating lever is provided with a positive neutra...

Page 15: ...hen checking the oil level 6 2 Drive selection The PRM 125 has been designed to operate with proprietary single lever control systems which decreases the engine speed to idle before opposite gear sele...

Page 16: ...annually which ever comes first 7 5 Cone Clutch adjustment The cone clutch is self adjusting and therefore needs no adjustment Should gear selection become difficult it is advisable to check the insta...

Page 17: ...tallation Remove examine and replace if necessary Check the alignment of the propeller shaft coupling if necessary rectify by adjusting the shims under the engine mounts or the engine mounts themselve...

Page 18: ...parts in solvent to remove dirt grease and oil Be careful to remove solvent from items before re fitting 9 4 Inspection 9 4 1 Gearcase Inspect for cracks Check sealing surfaces for any scratches dama...

Page 19: ...gear 24 and remove the bearing 28 cone Check condition of the O ring 49 on the idler shaft 2 9 6 6 Selector By hand remove selector shoe 9 and the spring 8 Remove the lever 13 Pass the selector contr...

Page 20: ...Add cover and case bore depths to give bore face lengths Dimension Y 5 Subtract bore face lengths from shaft lengths over bearings to achieve shim requirement Dimension Y A 6 Fit shims as required to...

Page 21: ...7 tighten the nut 18 against the selector body 7 to 17 Nm 13lbft This will give 0 60mm clearance between the bottom of the selector shoe 9 and the dog point grub screw 17 at max cone eccentricity CAUT...

Page 22: ...0563201 NEEDLE BEARING 2 24 MT8406 IDLER GEAR 1 25 001 0270 BEARING 4 26 0672801 THRUST WASHER 2 27 0320470 INTERNAL SPRING RING 1 28 0540252 BEARING 2 29 MT8621 FRONT CASE 1 30 MT8095 BINX NUT 3 31...

Page 23: ...21 PRM 125 13 Exploded view and Cross section Figure 5 Exploded view and cross section...

Page 24: ...22 PRM 125...

Page 25: ...23 PRM 125...

Page 26: ...24 PRM 125...

Page 27: ...ODUCTS MT8684 KIT 2 1 MT8684 MT8687 MT8688 FORWARD GEAR REVERSE GEAR CONE CLUTCH PRM 120 PRM 125 MT8685 KIT 2 5 1 MT8685 MT8687 MT8688 FORWARD GEAR REVERSE GEAR CONE CLUTCH PRM 120 PRM 125 MT8686 KIT...

Page 28: ...26 PRM 125 NOTES...

Page 29: ...gn specifications are subject to change without notice Accordingly data given herein should be regarded as a general guide only and does not form part of any contract Any specific performance requirem...

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