Instructions for Replacing the Support Plate on Certain SW60 Wheel Saws{6712} Caterpillar


Instructions for Replacing the Support Plate on Certain SW60 Wheel Saws{6712}

Usage:

SW60 WLS


Work Tool:
SW60 (S/N: WLS1-UP)

Introduction

An improved 227-8128 Hub is required on certain SW60 Wheel Saws. The improved plate is now a forging without any weld requirements. This improved hub is part of the 227-8124 Wheel Saw Frame Gp .

The plates are adaptable with the serial numbers listed in Table 1.

Table 1
Adaptability of the Improved Support Plate    
Sales Model     Adaptability    
SW60     S/N:WLS1-344    

Safety

------ WARNING! ------

Accidental engine starting can cause injury or death to personnel working on the equipment.

To avoid accidental engine starting, disconnect the battery cable from the negative (−) battery terminal. Completely tape all metal surfaces of the disconnected battery cable end in order to prevent contact with other metal surfaces which could activate the engine electrical system.

Place a Do Not Operate tag at the Start/Stop switch location to inform personnel that the equipment is being worked on.

----------------------

------ WARNING! ------

Personal injury or death can result from improper lifting or blocking.

When a hoist or jack is used to lift any part or component, stand clear of the area. Be sure the hoist or jack has the correct capacity to lift a component. Install blocks or stands before performance of any work under a heavy component.

Approximate weights of the components are shown. Clean all surfaces where parts are to be installed.

----------------------

Rework Procedure

ReferenceRefer to your machine service manual as needed and required during this procedure.

Some of this rework procedure is performed with the wheel saw attached to the skid steer loader. Use safety struts where possible. The weight of the complete wheel saw is approximately 1200 kg (2645 lb). Be sure that any lifting equipment you use is able to lift this weight.




    Illustration 1g02648888

  1. With the wheel saw attached to the skid steer loader, fully side shift the wheel to the right-hand side. Position with the wheel on the ground under a lifting crane capable of the maximum weight. Lower the depth control guides down to the minimum depth setting. Refer to Illustration 1.



    Illustration 2g02648904

  1. Loosen the top retaining nut for the RH side of the depth control cylinder. Refer to Illustration 2.



    Illustration 3g02648909



    Illustration 4g02648911

  1. Remove the circlip retaining the bottom end of the RH side of the depth control cylinder and pull the cylinder of the pin. Refer to Illustrations 3 and 4.

    Note: Remove the side deflector plate for better access.




    Illustration 5g02650137



    Illustration 6g02650156

  1. Remove six bolts and the plate connecting the two adjuster frames at the rear. Refer to Illustration 5.

  1. Remove the plate connecting the two adjuster frames at the front. Refer to Illustration 6.

  1. Enter the skid steer loader and work the auxiliary lines to raise the depth control guides. This process will retract the RH cylinder assembly and raise the depth control frame on the LH side. Refer to Step 3.

  1. Remove the top retaining nut for the RH side depth control cylinder. Use cable ties to secure the cylinder out of the way.



    Illustration 7g02652996

  1. Remove the top bolt on the RH depth control frame. Place a lifting eye with M12 treads. Attach lifting device to the eye and take the weight. Refer to Illustration 7



    Illustration 8g02653000

  1. Remove five bolts retaining the RH flat guide plate for the depth control frame. Refer to Illustration 8. This RH frame should be free to lift clear, removed, and store flat.



    Illustration 9g02653016

  1. Remove five nuts that secure the motor studs to the wheel. Refer to Illustration 9.



    Illustration 10g02653020

  1. Remove four bolts that secure the bearing housing to the RH side main frame. Refer to Illustration 10.



    Illustration 11g02653040

  1. Make sure that both of the park stand legs are lowered to the ground. The park stand legs and the wheel are all in contact with the ground. Refer to Illustration 11.



    Illustration 12g02653056

  1. Connect three lifting chains to the wheel saw lifting points. 2 of the chains are on the rear frame and one chain is on the upper main frame at the front. Refer to Illustration 12. The lifting crane will take the weight of the wheel saw.

  1. Disconnect all hydraulic lines from the skid steer loader.

  1. Removed the wheel saw from the coupler of the skid steer loader.



    Illustration 13g02653516

  1. The crane will support the wheel saw. Lower the wheel saw down onto the RH side. Refer to Illustration 13.

    Note: Use wooden blocks or appropriate supports in order to allow the wheel saw to rest in a secure flat position.




    Illustration 14g02653538

  1. Remove nut at the top of the LH side depth control. Refer to Illustration 14.

  1. With the nut removed, push down the LH side depth control frame with the cylinder attached at the lower end.



    Illustration 15g02654119



    Illustration 16g02654121

  1. Remove the bolts that secure the hydraulic motor. Refer to Illustration 15.

  1. Remove two bolts opposite each other from the motor cover plate. Attach two lifting eyes with M16 threads. Refer to Illustration 16.



    Illustration 17g02654199

  1. Using the lifting equipment, lift the motor and place to one side with some protection under the studs. The hoses can be left connected to the motor. Refer to Illustration 17.



    Illustration 18g02654236

  1. Remove 2 teeth at 180° intervals on the wheel. Refer to 18.



    Illustration 19g02657296

  1. Attach two lifting link eyes to these two teeth holders and lift the wheel carefully inside the main frame. Maneuver the wheel out of the frame and then turn the wheel over to access the bearing and support plate, Refer to Illustrations 19 and 20.



    Illustration 20g02657301

  1. Remove the ring of bolts securing the support plate to the wheel. Refer to Illustration 20.



    Illustration 21g02657316

  1. Lift the support plate and bearing housing to a clean bench area. Remove the circlip securing the bearing cover. Refer to Illustration 21.



    Illustration 22g02657361

  1. Remove the grease nipple and insert a M10 X 1 bolt. Screw in the bolt in order to push out the cover. Refer to Illustration 22.



    Illustration 23g02659577



    Illustration 24g02659579

  1. With the cover removed, remove the circlip and spacer ring in the bearing housing. Refer to Illustrations 23 and 24.



    Illustration 25g02659644

  1. Using a puller, remove the bearing support from the shaft of the support plate. Do not damage the housing seal on the underside. Refer to Illustration 25.

Installation

Before completing the installation of the new support plate, check that the bearing and seal in the housing are in good condition. If any doubt, replace both the bearing and seal.




    Illustration 26g02659657

  1. The new support plate is cleaned and prepared on the bench. Fit the bearing housing to the support plate using a tube over the shaft down onto the inner bearing race. Either use a press or soft hammer to fully seat the bearing. Refer to Illustration 26.



    Illustration 27g02659776



    Illustration 28g02659777

  1. Insert the spacer ring and fit the new circlip. If necessary, add some additional grease. Trough the grease point on the side of the housing. Refer to Illustrations 27 and 28.



    Illustration 29g02659801

  1. Fit a new O-ring to the bearing cover and fit the cover to the housing using a new circlip. Install the grease nipple removed earlier. Refer to Illustration 29.



    Illustration 30g02659816

  1. With the support plate and bearing housing fully assembled, The housing is ready to install back onto the wheel. Use the original M14 bolts. Tighten these bolts in a diagonal pattern to a torque of 110 ± 10 N·m (81 ± 7 lb ft).



    Illustration 31g02659916

  1. Lift the wheel as before with the lifting equipment and first turn the wheel over. Swing the wheel carefully back into position in the main frame. Sit the wheel centrally in order to allow access to fix the motor in place. Refer to Illustration 31.

    Note: This stage you need to make sure the bearing housings flat edge sits on the plate inside the main frame.




    Illustration 32g02661918



    Illustration 33g02662080

  1. Lift the motor with the lifting equipment and move into position over the wheel making sure that the studs align through the wheel holes. Align the motor fixing holes with the frame and install the M22 bolts. Tighten the bolts down in 2 stages using a crossing pattern to a torque of 446 ± 40 N·m (329 ± 29 lb ft). Refer to Illustrations 32 and 33.



    Illustration 34g02662082

  1. Remove the two lifting eyes from the motor and refit the 2- M16 bolts. Tighten the bolts to a torque of 210 ± 21 N·m (155 ± 15 lb ft). Slide the LH depth control frame up so that the upper end of the cylinder can be fixed to the main frame. Refer to Illustration 34.



    Illustration 35g02662136

  1. Connect three lifting chains to the wheel saw lifting points. Two of the lifting points are on the rear frame, and 1 is on the upper main frame at the front. Raise the wheel saw back up to the upright position in order to stand on the wheel and the rear support stands. Refer to Illustration 35.



    Illustration 36g02662360

  1. Install the 4 bolts and 4 nuts to secure the bearing housing to the frame and tighten to a torque of 240 ± 20 N·m (177 ± 15 lb ft). Refer to Illustration 36.

    Note: Ensure that the bearing housing sits on the support bar and up against the inside of the frame.




    Illustration 37g02662376



    Illustration 38g02662378

  1. Using Loctite 270 fit the nuts onto the motor studs. Refer to Illustration 37. In a crossing pattern and over 3 stages of torque, tighten these nuts to a torque of 860 N·m (634 lb ft). These nuts can be accessed through a hole in the main frame. Refer to Illustration 38. Lift the wheel slightly clear of the ground to allow the wheel to rotate into a better position in order to access the nuts.



    Illustration 39g02662536

  1. Reattach the wheel saw back onto the skid steer loader and remove the lifting chains. Position the wheel saw in the working horizontal position. Refer to Illustration 39.



    Illustration 40g02662537

  1. Lift into place the RH side depth control frame and fit the RH flat guide plate for the depth control frame. Refer to Illustration 40.+



    Illustration 41g02662557



    Illustration 42g02662559

  1. Fit the depth control cylinder to the lower point first and secure with the circlip. Raise the depth control frame to allow the upper end of the cylinder to be fixed to the main frame. Refer to Illustrations 41 and 42.



    Illustration 43g02662561



    Illustration 44g02662562

  1. Fit the front and rear depth control frame connecting plates. Refer to Illustrations 43 and 44.



    Illustration 45g02662563

  1. If either deflector plates were removed, install the deflector plates. Refer to Illustration 45.

  1. Reconnect all hydraulic lines to the skid steer loader. Test the wheel saw.

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