ADAPTER 4883256 - Caterpillar

Introduction
The problem that is identified below does have a known permanent solution. Use the solution that is identified below.Problem
The heater hoses may leak coolant near the heater core and will require retightening of the band clamps on certain Small Wheel Loaders.Solution
Illustration 1 g06251340
Check clamps for signs of leakage
Remove the HVAC cover and inspect for a leak at the 124-6257 Hose Clamps.
Illustration 2 g06319476
Install new clamps in place of previous clamps
Remove the clamps and replace with 521-6103 Band Clamps.Clamp position may also affect the sealing of the joint. Refer to Illustration 3.
Illustration 3 g06251348
(A) 7 mm (0.28 inch) maximum
(B) 521-6103 Band Clamp
(C) Tube
(D) Hose
(E) BarbClamp placement guide:
The end of the hose should be approximately 25.4 mm (1.0 inch) from the center of the bead.
The edge of the clamp closest to the hose end should be approximately 6.4 mm (0.25 inch).
Never place the clamp over the bead or any portion of the bead.
When assembling a hose onto an elbow, avoid pushing the hose over or onto the elbow radius. The clamp for this joint should never be on the elbow radius.
The edge of the clamp, closest to the barb, should ideally be installed as close to the barb as possible without being installed on top of the barb.
The edge of the clamp should not be more than 7 mm (0.28 inch) from the barb.