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W&C214 

REV 03.01.2017 

 

 

 

 

 

 

 

1.

 

Introduction ____________________________ 1

 

1.1 Installer Responsibility _______________ 1

 

2.

 

Before You Begin ________________________ 1

 

2.1 Safety Explanations _________________ 2

 

2.2 Warning  __________________________ 2

 

2.3 Identifying Your Model _______________ 2

 

3.

 

Ride Height _____________________________ 3

 

3.1 Calculating Ride Height ______________ 3

 

4.

 

Installation _____________________________ 4

 

4.1 Mounting the Suspension _____________ 4

 

4.2 Adjusting Maximum Turn Angle ________ 8

 

4.3 Adjusting Wheel Toe-in  ______________ 9 

 

5.

 

 Torque Requirements ___________________ 10

 

5.1 Torque Guidelines  _________________ 11

 

6.

 

Air Pressure vs. Load Guide ______________ 13

 

SL2065 Series Pressure Chart ___________ 13

 

7.

 

Parts List  _____________________________ 14

 

8.

 

Service Kits  ___________________________ 19

 

9.

 

Quick-change Ride Height  _______________ 21

 

10.

 

Preventive Maintenance

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TABLE OF CONTENTS 

Summary of Contents for SL-2065

Page 1: ..._________ 3 4 Installation _____________________________4 4 1 Mounting the Suspension_____________ 4 4 2 Adjusting Maximum Turn Angle ________ 8 4 3 Adjusting Wheel Toe in ______________ 9 5 Torque Requirements___________________10 5 1 Torque Guidelines _________________ 11 6 Air Pressure vs Load Guide______________13 SL2065 Series Pressure Chart___________ 13 7 Parts List ________________________...

Page 2: ...pensions upon delivery The vehicle manufacturer must approve any changes to the vehicle frame before the changes are done Cutting or altering the vehicle s frame is normally not permitted by the manufacturer and affects the manufacturer s warranty coverage 1 1 Installer Responsibility The installer of the suspension system must Ensure that the vehicle functions properly with the increased weight o...

Page 3: ...n the manufacturer s warranty 2 2 Warning Proper axle attachment required for safe operation of the vehicle No alteration of any Watson Chalin suspension components is permitted without proper authorization from qualified Watson Chalin personnel No welding of any suspension components is permitted except when specified by Watson Chalin 2 3 Identifying Your Model IMPORTANT It is important that you ...

Page 4: ...fied on the corresponding drawing when the vehicle is in its loaded condition Watson Chalin provides numerous different SL series suspension systems to accommodate different vehicle ride heights and capacities 3 1 Calculating Ride Height Proper Ride Height is calculated with the following equation Ground to Bottom of Vehicle Frame loaded ______________ Static Loaded Tire Radius ______________ Ride...

Page 5: ...l not carry its share of the load straining the other suspension components When there is too little ground clearance or if the suspension is overloaded the vehicle will bottom out while going over bumps and damage can be done to the suspension components or other components on the vehicle 4 1 Mounting the Suspension Before mounting the suspension you must Confirm that the proper suspension and ax...

Page 6: ... Axle and Suspension System Installation Manual 5 NOTE Throughout the installation process you must check frequently for suspension clearance problems while mounting the suspension FIG 4 Chassis Crossmember Reinforcement ...

Page 7: ...driving the rear axles and tires onto a lift 7 Raise the suspension into position using the marked axle front hanger rail and upper bag plate center line as locators NOTE If while raising the SL series suspension into place the hangers get stuck on the frame because they are too narrow loosen the bolts on one side of the crossmember This will allow the hangers to separate enough to move into posit...

Page 8: ...on side rail to the vehicle frame using the appropriate size grade fastener specified above flat washer and lock nut Use at least 2 bolts per side 13 Drill remaining mounting holes per side rail See Figure 7 or the supplied suspension drawing for recommended fastener quantities and locations 14 Install the remaining bolts washers and lock nuts and tighten cap screws to proper torque See Torque Req...

Page 9: ...1 Measure the current Turn Angle 2 The maximum turn angle for SL2065 Series model is normally set at the maximum 25º Some applications may require less turn angle 3 If the turn angle needs to be adjusted adjust the stop bolt until the correct angle is obtained on both sides 4 To obtain the maximum Turn Angle a Loosen the stop bolt jam nut as seen in Figure 8 b Adjust the turn angle by adjusting th...

Page 10: ...f tires around the complete outer surface of the tire 4 Place the pointers of a trammel bar on the marks of each tire and rotate the tires making sure a straight line has been marked 5 Measure and record the distance at the back of the tires 6 Measure and record the distance at the front of the tires 7 Use the following calculation to determine the Toe in measurement Distance between back tires R ...

Page 11: ...ollowing tables are applied to nuts but not bolts All torque requirements are for lubricated threads only A lubricated thread is defined as a bolted connection that has some form of friction modifier or lubricant applied to the thread surfaces which provides a lower torque requirement FIG 10 Knuckle Component Torque Illustration ...

Page 12: ...irements Torque values shown apply only to W C supplied fasteners If other fasteners are used follow torque specifications listed in vehicle manufacturer s service manual Item Description Size Torque Range lb ft 25 Backbone Upper Kingpin Assembly Nut 7 8 14 425 26 Tie Rod End to Tie Rod Arm Castle Nut 7 8 14 160 300 28 Stabilizer Shock Nut 3 4 16 200 250 32 Integrated Brake Anchor Pin Nut 5 8 18 1...

Page 13: ...e proper torque as specified below U Bolt Non Plated Clean Lubricated Thread Torque Requirements Airspring Torque Requirements Airspring Air Fitting Torque Requirements UNF Grade 8 Size 3 8 1 2 5 8 3 4 7 8 1 1 1 8 U Bolt minimum ft lbs 15 40 120 200 400 650 800 U Bolt maximum ft lbs 20 60 150 250 450 750 900 Size Description Max Torque Requirement ft lbs 3 8 UNC Blind Nuts 50 1 2 UNC Bolt or Stud ...

Page 14: ...5 69 74 78 83 11 5 20 30 40 49 59 68 73 78 83 88 SL2065 12 10 18 27 35 44 52 61 65 70 74 78 11 25 19 28 37 46 55 65 69 74 78 83 12 5 20 30 40 49 59 68 73 78 83 88 SL2065 13 11 18 27 35 44 52 61 65 70 74 78 12 25 19 28 37 46 55 65 69 74 78 83 13 5 20 30 40 49 59 68 73 78 83 88 Some capacities shown may not be best suited for the suspension based on too much brake force for the applied load Therefor...

Page 15: ... 14 7 Parts List The following section shows the exploded view of the SL2065 series lift axle This view and corresponding parts list in the following table is intended to help you identify parts and part numbers that may need to be replaced FIG 12 SL2065 Exploded View ...

Page 16: ...5 LIFT BAG HARDWARE PACK 18 1 CHART 4 LIFT BAG PLUMBING KIT HARDWARE 19 1 CHART 2 SL2055 COMMON PVT HDWE 20 1 HPPT16094 PIVOT CONNECTION PACK 21 1 011707 1 BACKBONE LH 20K INT BRAKE 012137 1 BACKBONE LH 20K BOLT ON BRAKE 22 1 011707 2 BACKBONE RH 20K INT BRAKE 012137 2 BACKBONE RH 20K BOLT ON BRAKE 23 1 009957 UPPER KINGPIN ASSY LH INT BRAKE 011918 1 UPPER KINGPIN ASSY LH BOLT ON BRAKE 24 1 009957...

Page 17: ...RAKE 33 2 REF ONLY HUB ASSEMBLY 34 2 REF ONLY BRAKE DRUM 35 2 REF ONLY SEAL 36 2 REF ONLY INNER BEARING 37 2 REF ONLY OUTER BEARING 38 2 REF ONLY SPINDLE NUT 39 2 REF ONLY HUB CAP 40 2 REF ONLY BRAKE CHAMBER 41 2 REF ONLY SLACK ADJUSTER 42 2 10050 TRAILING ARM BUSHING FRONT 43 2 11938 91 TRAILING ARM BUSHING REAR FIG 13 SL2065 Hanger Configurations View ...

Page 18: ...SL20K Self Steering Axle and Suspension System Installation Manual 17 CHART 1 SL2065 Hanger Configurations Chart ...

Page 19: ...SL20K Self Steering Axle and Suspension System Installation Manual 18 CHART 2 SL2065 Frame Width Chart CHART 3 SL2065 Side Rail Height Chart CHART 4 SL2065 Run Height Chart ...

Page 20: ... parts for 1 torque rod QTY PART NO DESCRIPTION 4 17010 WASHER FLAT 88X1 5 2 11457 NUT LOCK 88 14 GRC 2 17238 5 CAPSCREW 87 X 5 00 1 17832 TORQUE ROD 20K TT HOLLOW BALL P00 0230 Bushing Kit SRK2055 2 Trailing Arm Bushing Kit Contains parts for 2 trailing arms QTY PART NO DESCRIPTION 2 10050 TRAILING ARM BUSHING FRONT 2 11938 91 TRAILING ARM BUSHING REAR 4 11457 NUT LOCK 88 14 GRC 8 17010 WASHER FL...

Page 21: ...EARING SRK107 01 Less kingpin Contains parts for 1 side of axle QTY PART NO DESCRIPTION 2 11448 GREASE FITTING 1 7X1002 DRAW KEY 1 143699 0062 NUT LOCK PIN 2 R 004725 KING PIN BUSHING 2 R 002593 KING PIN SEAL 3 19690 014 SHIM 1 T1822SGX THRUST BEARING R 010300 With Kingpins Same as SRK107 only this kit contains upper lower castings with bushings pressed in Contains parts for 1 complete axle R 0103...

Page 22: ...movement may vary depending on the brand configuration and operating condition of the lift axle control system and or other factors Read understand and comply with all applicable operating instructions and safety information provided by the lift axle control system manufacturer and vehicle manufacturer Ensure all personnel are clear of lift axle before and during vehicle loading and lift axle acti...

Page 23: ...g against air springs or chaffing Clear debris and or replace as necessary Brake Components Visually inspect for damage to any components and to ensure all mounting fasteners are tight and properly aligned Brake adjustment should be checked weekly Brake operational check interval and component inspection interval with drum removed should never exceed 3 months of service All brake service should be...

Page 24: ...first Verify torque inspect for leaking or damaged boots grease Kingpin Bushings 10 000 mi or 6 months whichever comes first Check for wear grease Pivot Connections 5 000 mi or as needed whichever comes first Verify torque Stabilizer shocks Verify torque Check for oil leaks and adequate return Brake Camshafts and adjusters During normal chassis lubrication or 3 months whichever comes first Check f...

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