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50940193/DP0415
Cooling System
Important:
Check the cooling system every day to prevent overheating, loss of
performance or engine damage.
Checking Coolant Level
1. Park the machine on a level surface.
2. Perform the “Mandatory Safety Shutdown Procedure” on page 14.
3. Wait until the engine has cooled.
Do not remove radiator cap when the coolant is
hot. Serious burns could result.
4. Check the coolant level in the expansion
reservoir (R, Figure 104). Coolant level
must be between the full (T) and low (S)
marks on the expansion reservoir. Add
coolant to the expansion reservoir as
required.
Important:
The coolant system is specifically
designed for coolant level top-off only through
the expansion reservoir. Do not add coolant
directly to the radiator.
Note:
Use a low-silicate ethylene glycol-based
coolant, mixed with quality water and
supplemental coolant additives (SCAs)
suitable for heavy-duty diesel engines. See
“Fluid Capacities/Lubricants” on page 183, “Coolant Compound Mixtures” on page 189
and the engine operation manual for additional information.
Cleaning Radiator Fins
The radiator fins can become blocked during use which will lead to reduced cooling
function and engine overheating. Clean the radiator cooling fins after every 250 hours or 6
months of operation, whichever occurs first.
1. Perform the “Mandatory Safety Shutdown Procedure” on page 14.
2. Wait until the engine has cooled.
3. Open the rear door. Lift the engine cover.
4. Clean the radiator fins by blowing air/water through the fins from the rear of the
radiator, toward the engine.
Important:
Use caution! High pressure air/water can damage radiator fins.
WARNING
Figure 104 – Coolant
Expansion Reservoir
R
T
S
Summary of Contents for R135
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