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4  - 

PRM125

 

 

FOREWORD 

Provided  it is  correctly  installed,  aligned  and  maintained,  the  PRM125D  Gearbox  should  have  a  long  and  trouble-free 
life. This workshop manual contains important instructions to ensure that this is so, and it is of the utmost importance 
that  these  are  carefully  followed.  PRM  Newage  Ltd.  can  accept  no  responsibility  under  warranty  or  otherwise  for  any 
loss or damage resulting from failure to observe these instructions. 

To avoid prejudicing your rights under warranty, do not undertake any repair or other work on the  Gearbox during the 
warranty period without first contacting PRM Newage  Ltd. or an authorised distributor/dealer for advice. In the event of 
failure, you should do this via the engine distributor who supplied the Gearbox, or his local dealer; if this is not possible, 
you should notify the local Newage distributor/dealer or PRM Newage 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  the  Gearbox;  if  this  is  not  possible,  application  may  be  made  to  the  nearest  distributor,  who 
must, however, be advised of the supplier's name and address. 

SERVICE PARTS 

The comprehensive illustrated parts list gives full information and ordering procedure. 

PRE-DELIVERY TEST 

Before it leaves the factory, every Gearbox is subjected to a final test and inspection which includes the following: 

1. 

Flush clean. 

2. 

Pressurise the Case, and check for oil leaks. 

3. 

Check drag torque in ahead, neutral and astern. 

4. 

Run Gearbox in neutral, ahead and astern in load conditions. 

5. 

Check force to engage and disengage ahead and astern Gear. 

6. 

Check noise levels. 

7. 

Check Output Nut torque. 

8. 

Check Coupling concentricity. 

 
 

IMPORTANT NOTICE: ONLY REMOVE BREATHER, 
DIP STICK, OIL DRAIN PLUG OR OIL LEVEL PLUG 
ONCE THE GEARBOX IS AT AMBIENT 
TEMPERATURE. REMEMBER HOT OIL CAN CAUSE 
BURNS – WORK SAFELY. 

 

 

Содержание PRM125D

Страница 1: ...PRM125D WORKSHOP MANUAL...

Страница 2: ...and therefore reserves the right to change specifications without prior notification Whilst every effort is made to ensure complete accuracy of the information in this manual no liabilities for inaccu...

Страница 3: ...d 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 Propell...

Страница 4: ...8 Gearcase 14 9 7 Re assembly of gearbox 14 9 7 1 Input Shaft 14 9 7 2 Output Shaft see 9 7 5 for shimming procedure 14 9 7 3 Idler Shaft 15 9 7 4 Selector housing assembly 15 9 7 5 Shimming 15 9 7 6...

Страница 5: ...e 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 the...

Страница 6: ...erial number and should always be quoted when 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...

Страница 7: ...sification without labouring 1 GENERAL DATA 1 1Specifications Gear ratios ahead 2 04 1 2 50 1 3 06 1 Gear ratio astern 2 44 1 common POWER RATING AHEAD RATIO PLEASURE LIGHT COMMERCIAL BHP kW BHP kW 2...

Страница 8: ...facilitate 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 whic...

Страница 9: ...elp 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 Chec...

Страница 10: ...9 PRM125 BASIC INSTALLATION DETAILS PRM125D Figure 4 Intallation Details...

Страница 11: ...Shaft and stern tube to be maintained Whether a solid of flexible coupling is used it is extremely important that the following points are carefully checked i the Coupling should be a tight press fit...

Страница 12: ...use in auxiliary sailboats sailing yachts etc Never put the Lever in the position corresponding to the direction of the Vessel 7 ROUTINE MAINTENANCE 7 1 Initial maintenance after 25 hours running Dra...

Страница 13: ...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...

Страница 14: ...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 damag...

Страница 15: ...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 Contro...

Страница 16: ...haft lengths over Bearings to achieve shim requirement Dimension Y A 6 Fit shims as required to within zero to 0 05mm pre load Place the Shims into the appropriate bore of the Front Cover 29 so that t...

Страница 17: ...of the Selector Shoe 9 and the Dog Point Grub Screw 17 at max cone eccentricity CAUTION This condition can only be maintained with the clutch at the top dead centre If this is not achieved the gear s...

Страница 18: ...SHER 2 23 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...

Страница 19: ...18 PRM125 13 Exploded view and Cross section Figure 5 Exploded view and cross section...

Страница 20: ...19 PRM125...

Страница 21: ...20 PRM125...

Страница 22: ...21 PRM125...

Страница 23: ...ODUCTS MT8684 KIT 2 1 MT8684 MT8687 MT8688 FORWARD GEAR REVERSE GEAR CONE CLUTCH PRM120 PRM125 MT8685 KIT 2 5 1 MT8685 MT8687 MT8688 FORWARD GEAR REVERSE GEAR CONE CLUTCH PRM120 PRM125 MT8686 KIT 3 1...

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