Subframe attachment bolts
The attachment between the subframe and the chassis frame is designed to allow certain movement. The size of the movement depends on driving conditions, operating behavior as well as torsional rigidity of the subframe and the body. It is critical that the attachment bolts and springs are maintained on a weekly basis. This section describes the procedure to make sure that all bolts have required torque.
Inspect the bolted joints between the subframe and chassis and make sure that no bolts are missing, loose or damaged and that all the bolts are tightened to the required torque according to the description on page 19.
Attachment bolts connect the bottom brackets to the chassis. It is M14 bolts in 10.9 quality. Retaining bolts connect the two brackets to each other. it is M16 bolts in 10.9 quality. Tightening values should be as per scania body builder instructions required to cross verify with scania personal at site before tightening.
- Do not work under an unstable tipper body.
- Risk of crush injuries.
- Use the tilt support if the tipper body is tilted.
First attachment bracket
Check the M14 bolt torque and spring flexibility.
- Apply the torque for M14(10.9) 135 ± 5 % Nm.
- Tighten the M16(10.9) nylock locking nut so that the length of the compressed spring coil is 109 ± 2mm
Second attachment bracket
Check the M14 bolt torque and spring flexibility.
- Apply the torque for M14(10.9) 135 ± 5 % Nm.
- Tighten the M16(10.9) nylock locking nut so that the length of the compressed spring coil is 104 ± 2mm.
Third attachment bracket
Check the M14 bolt torque and spring flexibility.
- Apply the torque for M14(10.9) 135 ± 5 % Nm.
- Tighten the M16(10.9) nylock locking nut so that the length of the compressed spring coil is 99 ± 2mm.
Fourth attachment bracket
Check the M14 bolt torque.
- Apply the torque for M14(10.9) 135 ± 5 % Nm
- Tighten M16 to maximum 25 ± 5 Nm. (Weekly basis)
Fifth attachment bracket
Check the M14 bolt torque.
- Apply the torque for M14(10.9) 135 ± 5 % Nm
- Tighten M16 to maximum 270 ± 5 % Nm. (Weekly basis)
Attachment plates
Check the M14 bolt torque.
- Apply the torque for M14(10.9) 135 ± 5 % Nm. (Weekly basis)
- Do not work under an unstable tipper body.
- Risk of crush injuries.
- Use the tilt support if the tipper body is tilted.
- Do not tighten the bolts between the pivot axle hinge and pivot beam if they are tight.
- Risk of damage to bolt threads.
- Use hand to feel if the bolts are tight.
Pivot bracket bolts
- Pos 1. Inspect the bolts on the pivot beam lids on both sides of the tipper body for damage. Verify that no bolts are missing. Tigthen M12 to 25 ± 5 Nm.
- Pos 2. Inspect the bolts between the pivot beam and the pivot axle hinge for damage. Verify that no bolts are missing. Use a hand to feel if the bolts between the pivot beam and pivot axle need to be tightened. If a bolt needs to be tightened, use a torque wrench to apply the torque of 325 ± 5 Nm to the bolt from the outside of the pivot beam and use a wrench on the inside of the pivot beam to hold the bolt back.
- Pos 3. Tigthen M12 to 25 ± 5 Nm.
Cylinder cradle mounting brackets bolts
- Inspect the bolts (16 nuts and bolts) on the cylinder cradle mounting bracket for damage. Verify that no bolts are missing.
- Use hand to check if any bolts between the cradle and hydraulic bracket is lose or missing. If lose or missing, the bolt needs to be replaced by a M16 10.9 quality bolt. Use torque wrench to apply a force of 330 Nm.
Hydraulic tank cradle bracket bolts
- Pos 1, 2. Inspect the bolts (3+3 nuts and bolts) on the cradle bracket. If a bolt needs to be tightened, use a torque wrench to apply a torque to 150 ± 5 Nm on the M14 (10.9) bolt from the outside of the cradle bracket and use a wrench on the inside to hold the bolt back. (Weekly basis).
Mudflap plate bolts
- Pos 1. Inspect the mudflaps for damage.