Periodic Maintenance and Adjustments. Midland Belly/Bottom Dump Trailer 4.6MB, Belly/Bottom Dump Trailer

5.2 PERIODIC MAINTENANCE AND ADJUSTMENTS

MAINTENANCE SAFETY

1. Read and understand all the information in the Operator’s Manual regarding maintenance, adjusting and servicing the Trailer unit.

2. Follow good shop practices:

- Keep service area clean and dry.

- Be sure electrical outlets and tools are properly grounded.

- Use adequate light for the job at hand.

3. Cage spring brake chamber before disassembling.

4. Block wheels before de-activating brakes.

5. Disconnect air lines and exhaust air system completely before working on discharge gates.

6. Establish and maintain a Trailer Preventative

Maintenance (TPM) program on your equipment. Some jurisdictions require this program and the maintenance of records on every commercial vehicle on the road for future reference.

Your trailer can only operate at top efficiency when it is maintained in good operating condition.

The maintenance procedures are summarized from the component manufacturers instructions included with this manual. Standard industry and component procedures are required to keep your trailer in top condition. All maintenance intervals are established for normal operating conditions. In light or intermittent conditions, the servicing and maintenance intervals can be extended. In heavy, extended or severe off-highway application, reduce the intervals for servicing and maintenance to keep the equipment in good condition. When a problem is found, correct the condition before continuing.

A good maintenance program will find conditions early when they are easily and quickly corrected before they become major problems. Operating your trailer in a defective condition, can lead to serious mechanical problems or can create safety hazards for the driver, bystanders or other operators.

5.2.1 TORQUE SPECIFICATION SUMMARY

Table 4 Recommended Torque Specifications

1. Oscillating Plate

Oscillating Plate

Oscillating 5th Wheel

Bushing Bolts

3/4" 250 ft. lbs.

2. Air Ride Suspension

1990032-RevA RAR-260

ITEM

Pivot Bolt (Shear-Type)

Pivot Nut (Lock Nut)

Shock Bolt/Nut

Air Spring Nut - Upper

SIZE

7/8”-9NC

3/4”-10NC

3/4”-16NF

1/2”-13NC

1/2”-13NC

TORQUE

See Below

200-230 ft-lb

45-50 ft-lb

45-50 ft-lb

271-312 N•m

61-68 N•m

61-68 N•m Air Spring Nut - Lower

Air Spring Bolt - Lower 20-25 ft-lb 27-34 N•m

Tighten pivot bolt using a 1’’-drive impact wrench and RW #6100054

E-20 Torx® socket (or equivalent) until Torx® head shears off.

Suspension fasteners to be re-torqued initially at 6,000 miles and at

50,000 mile increments thereafter. Do not re-torque pivot fasteners.

See service manual for details.

Ridewell Suspensions • Springfield, MO USA • 800.641.4122 • www.ridewellcorp.com

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Table 4 Recommended Torque Specifications (cont'd)

3. Mechanical Suspension

REYCO 21B SPRING RIDE SUSPENSION HUTCH SPRING RIDE SUSPENSION

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4. Wheel End Components

Description

1. Hub-cap bolts

2. Hub fill plug

3. Adjustment nut - manual bearing adjustment (double nut)

4. Jam nut - manual bearing adjustment

5. Brake mounting bolt

6. Two-piece dust shield bolts (shown)

• Forged spider

7. Bolt-on bushing bolts

8. Cam bushing bolts

9. Air chamber nuts

Torque Range

N.m

(lb-ft)

10-15

15-20

Tighten to 100, loosen, tighten to 50, loosen

1/4 turn

250-300

130-165

13-20

20-27

136

68

340-408

177-224

15-20

25-35

25-35

80-125

20-27

34-48

34-48

109-170

Fastener

Size

5/16"

3/8"

Size depends on axle model and adjustment method.

5/8"

3/8"

3/8"

3/8"

5/8"

5. Wheel Nut

Stud Size

3/4" - 16

Wheel Type

Disc

1-1/8" - 16 Disc

Bud Unimount 10

WHD-8

Ft-lbs Torque

(Dry)

450 - 500

450 - 500

390 - 440

400 - 600

Bolt Size

5/8" - 11

3/4" - 10

Ft-lbs Torque (Dry)

150 - 175

210 - 260