NHTSA ID Number: 10164378
Manufacturer Communication Number: 42-056
TSB/Document Date: 2019-09-05
Summary
Fix-As-Fail -+?+? Composite fittings used in the cooling system may crack, resulting in coolant leaks. Brass fittings are available to replace the composite fittings.
MX-11
Brass
Variations
Port R (DEF/Slpr)
Nylon (with V381166)
Port A (Cab htr)
Brass
Variation
Nylon (with V38-1166)
Brass
KW 2.1m
V97-1174-X11
DEF coolant & slpr heater
V88-1141 & V38-1166 V38-6040 & V38-1089
KW 2.1m
V97-1176-X11
DEF coolant & slpr heater
V88-1145 & V38-1166
V38-6040 & D2034-6707
KW 2.1m
w/ cab htr - A01
V38-1166 & V88-1123645080090
V38-1089
KW 1.9m
V97-1174-X22
DEF coolant & slpr heater
V88-1142 & V38-1166 V38-6040 & V38-1018
KW 1.9m
V97-1176-X22
DEF coolant & slpr heater
V88-1144 & V38-1166
V38-6040 & V38-1018
KW 1.9m
w/ cab htr - A02
V38-1166 & V88-1123500165000
V38-1018
KW All
DEF only
V88-1143 & V38-1166
KW (All)
DEF only
V38-1166 & V88-1143
V38-6041
Variations
Port R (Cab heater)
Nylon (with V381166)
V38-6041
Brass
Variations
Port P (Cab heater)
Nylon (with V381166)
Port E (AD htr/2nd DT cooler)
Brass
Variation
KW 2.1m
V97-1174-X11
cab heater
V88-1123-600165000
& V38-1166
V38-1089
KW 2.1m
V97-1176-X11
cab heater
V88-1123-645080090
&
V38-1166
D2111-3602 &
V88-1107 (3/4 in.)
KW 1.9m
V97-1174-X22
cab heater
V88-1123-500165000
& V38-1166
V38-1018
KW 1.9m
V97-1176-X22
cab heater
KW 2.1m w/ 1 AD htr or 2nd DT
cooler
KW 1.9m w/ 1 AD htr w/o in-cab
htr - E01
V88-1123-590100110
& V38-1166
D2111-3603 & V88-1028
KW 1.9m w/ 1 AD htr & w/ in-cab
htr - E02
CAB Definition
2.1m Cabs
T680, T880, W990
1.9m Cabs
T600 Service cab, C500, T660, T800, W900
Nylon (with V38-1166)
Brass
V38-1166 & V88-1135-500
D2111-3603
V88-1109
V38-1166 & V88-1123545080090
D2111-3603 & F88-1050
KW 1.9m
2nd DT cooler - E03
V38-1166 & V88-1135-600
D2111-3602
V88-1167
Variation
Nylon (with V38-1166)
Brass
V38-1166 & V88-1138
V38-6042
V38-1166 & V88-1123560110095
V38-1088
All
1st DT cooler - G01
KW 1.9m
3rd AD htr - G02
PRE-EPA2017 ENGINE FITTINGS
MX-13
Variations
Port A
Nylon (with V381166)
MX-11
Brass
Variations
Nylon
Port A (Cab htr)
Brass
5/8 in. fitting & 45 deg
v88-1123-545080090
v38-1088
3/4 in. fitting & 90 deg
v88-1123-690100110
v38-1090
5/8 in. fitting & straight
v88-1123-500115000
v38-1018
5/8 in. fitting & straight
v88-1123-500115000
v38-1018
3/4 in. fitting & 45 deg
3/4 in. fitting & straight
v88-1123-645080090
v88-1123-600115000
v38-1090
v38-1089
Variations
Port C
Nylon (with V381166)
v88-1123-645080090
v38-1090
5/8 in. fitting & 45 deg
v88-1123-545080090
v38-1088
5/8 in. fitting & 45 deg
3/4 in. fitting & 45 deg
Port G
Nylon (with V381166)
v88-1123-545080090
Brass
v38-1088
v88-1123-645080090
v38-1090
Port P
Nylon (with V381166)
Brass
5/8 in. fitting & straight
v88-1123-500115000
v38-1018
3/4 in. fitting & straight
v88-1123-600115000
v38-1089
Variations
Variations
Port R
Nylon (with V381166)
Variation
Brass
5/8 in. fitting & straight
v88-1123-500165000
v38-1018
5/8 in. fitting & straight
5/8 in. fitting & straight
5/8 in. fitting & straight
v88-1123-500115000
v88-1123-560110095
v88-1123-600165000
v38-1018
v38-1018
v38-1089
Variations
5/8 in. fitting & straight
Variations
5/8 in. fitting & straight
Variations
3/4 in. fitting & 90 deg
Nylon
v88-1123-500115000
Port G
Nylon (with V381166)
v88-1123-500115000
v38-1018
Brass
v38-1018
Port P
Nylon (with V381166)
Brass
v88-1123-690100110
v38-1090
3/4 in. fitting & 45 deg
Port R
Nylon (with V381166)
v88-1123-645080090
V38-1166 & V88-1123645080090
V38-1166 & V88-1123500165000
Brass
V38-1089
V38-1018
Port E (AD htr/2nd DT cooler)
Brass- Future
Variation
KW 2.1m w/ 1 AD htr or 2nd DT
cooler
KW 1.9m w/ 1 AD htr w/o in-cab
htr - E01
KW 1.9m w/ 1 AD htr & w/ in-cab
htr - E02
KW 1.9m
2nd DT cooler - E03
Variation
All
1st DT cooler - G01
KW 1.9m
3rd AD htr - G02
Brass
D2111-3602 &
V88-1107 (3/4 in.)
Nylon
Brass
V38-1166 & V88-1135-500
D2111-3603
V88-1109
V38-1166 & V88-1123545080090
D2111-3603 & F88-1050
V38-1166 & V88-1135-600
Nylon
D2111-3602
V88-1167
Brass- Future
V38-1166 & V88-1138
V38-6042
V38-1166 & V88-1123560110095
V38-1088
CAB Definition
2.1m Cabs
T680 & T880 & W990
Variations
Nylon
KW 2.1m
w/ cab htr - A01
KW 1.9m
w/ cab htr - A02
Port C
Brass
3/4 in. fitting & 45 deg
Variations
Port A
1.9m Cabs
T600 Service cab & C500 &
T660 & T800 & W900
Hoses ALL YEARS
Description
Formed hose
Formed hose
Formed hose
Formed hose
Formed hose
Formed hose
bulk hose 3/4 in.
bulk hose 5/8 in.
bulk hose 3/4 in.
bulk hose 3/4 in.
Current
v50-1523
v50-1521
v50-1524
v50-1522
v50-1519
v50-1520
k342-525-000
f50-1016-5-0000
f50-6178-00000
v50-6008-2xxxx
Replacement
v50-6129
v50-6132
v50-6134
v50-6133
v50-6130
v50-6131
d1030-3755
d1030-3625
d1030-3755
d1030-3755
ADD COOLANT PROCEDURE
How to Add Coolant to the Cooling System
42-056, 42-058
WARNING!
DO NOT remove the surge tank fill cap (1) while the engine is hot. Scalding steam and fluid under
pressure may escape and cause serious burns. Failure to follow this instruction may result in personal
injury or death.
Note: If frequent filling is necessary and there are no visible signs of coolant leaks when the engine
is cold, check for leaks while the engine is operating at normal temperature.
Note: DO NOT remove the pressure cap (2) or use it to add coolant to the surge tank.
Note: DO NOT overfill the cooling system. Excess coolant may result in overflow, loss of antifreeze,
and reduced corrosion protection.
Note: If frequent filling is necessary or there are any signs of coolant leakage, consult a PACCAR
Service dealer.
Check the coolant level before and after each trip. Add coolant as necessary. Coolant may not immediately
appear at the correct level after the radiator is filled. Air may be trapped in the cooling system, which will
affect the coolant level, until the air is purged.
- Formulated to replace the OEM fluid in Asian make vehicles...
- 5 year/150, 000 mile . Silicate-free, long-life, phosphate...
- The long life formula provides protection for all cooling...
- Meets the following OEM and industry specifications: JIS K...
- Note: Please check the vehicle specification before...
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TSB/Document ID: 42-056
Replacement Service Bulletin Number:
MFR Communication Date: 2019-08-28
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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