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Gian Businesses Index & Contractors in Levin and wellington NZ
 
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CATERILLAR D4-7U BULLDOZER USING A HONDA 6.5HP MOTOR TO START THE PONY MOTOR

 

 

 

We first marked the holes for the Honda 6.5hp petrol motor so it would slide on springs located underneath. Better still if you use as centrifugal clutch pulley then you can bolts diectly onto the frame. We used a 50+ V pulley belt commonly costing in NZ @ $28. The rest is bolts with srping underneath to push the motor once the pony starts.

 

 

You can see we line a steel plate to run the Oxy/LPG

gas cutter as we do not have wheels.

 

Locator holes finished and ready to clean the holes and locate the Hona motor. We actually made a pull lever to pull the motor towards the outside so the belt will tension.You must push back once the pony motor engages.

 

 

The Caterpillar D4 -JU Series

Remember this bulldozer does not use a battery as the magneto does the work of the normal distributor and spark etc. Once awake you need to keep the Pony running until the water heats up to the main motor and the head at the rear of the main motor is warm. Especially when starting in real cold weather this is important. The pull rope start is a headache-- you start it clockwise. We changed to a Honda start motor for this machine. Remember we are back yard bush mechanics but have had a few machines and this works great!!!

 

D4. 7U. 1947 7U1-7U1797 D4. 7U. 1948 7U1798-7U4257  
D4. 7U. 1949 7U4258-7U8027 D4. 7U. 1950 7U8028-7U11887
D4. 7U. 1951 7U11888-7U16008 D4. 7U. 1952 7U16009-7U20836
D4. 7U. 1953 7U20837-7U26193 D4. 7U. 1954 7U26194-7U30583 
D4. 7U. 1955 7U30584-7U35569 D4. 7U. 1956 7U35570-7U39596
D4. 7U. 1957 7U39597-7U42012 D4. 7U. 1958 7U42013-7U42725
     D4. 7U. 1959 7U42726-  

 

Using small motors with a smaller v pulley you can now start the pony effertlessly. There are many versions but we used this 6.5hp Honda Motor with a 50+ V pulley belt to start the pony motor. No more pull starts rapping the rope around the pony start

 

 

PONY MOTOR MAGNETOS IN NZ FIXED:

If you need pony motor help Just to let you know that I test, repair and rewind all Magnetos, including those for pony engines.
I am based in Mt Eden, Auckland. Let me know if I can help you. Paul Greet 021 771090 OR [ email ]

 

 

 

THIS IS AN ELECTRIC START pony motor using a starter with pre start ignition and beding the starter arm to engage the flywheel pulleys. You can also use a Briggs & Stratton lawnmower motor with pull start to make it easy as the old pull start is a pain. Try to use a centrifigual cluth so you dont need to pull out the lever once the pony starts

WE ARE ALWAYS INTERESTED IN BUYING USED CAT D4-7U PARTS ANYWHERE IN NZ.

JUST EMAIL US

 

 

 

If you wish to share any CatD4-7U info please send us email. We are happy to add information for you on our website especially parts comments, problems, pics of your machines ---etc. For Kiwis with Cat 7U tell us what serial number you have and where in NZ you live as we wish to index machines. [ D4-7U bulldozer Forum ad ]

[ D4-7U pony motor ] [ D4-7U bulldozer latest Oct-Nov pics ] [ D4-7U work next on steering clutches 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17] [ D4-7U bulldozer USA parts ] [ D4-7U backend installing ] [ D4-7U brakeshoes ] [ NZ suppliers of CAT & Komatsu parts ] [ D4-7U bulldozer pics ] [ D4-7U bulldozer hyster winch ] We are also suppliers of NEW Komatsu spare parts for PCs up to 4 tonne as well looking for agents to buy our [ retread truck and bus tyres ]. RUBBER EXCAVATOR TRACKS FOR SALE all models : [ RUBBER TRACKS ] [ Kiwi bulldozer parts links ]

 
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