P16-42

Subject: A/C And Coolant Lines Interference In The Main Evap Compartment
Field Change Program:
Procedure
Procedure Number:
16-42
Coach Section:
16-Heating and A/C
P/N:
Revision:
A
16-06-1639
Date:
02/22/2020
Type:
Product Improvement
Application:
Coach Model
Model Year
VIN
J4500
2019 - 2020
69200 - 69781
D45CRT-LE
2019 - 2020
81000 - 81080
Read this entire procedure before beginning work.
Use Safe Shop Practices at All Times.
To avoid personal injury:
a. Proper Personal Protective Equipment (PPE) must be worn. Safety glasses and
protective gloves are required for working with DEF Fluid.
b. Turn the main battery disconnect switch to the OFF position.
c. Ensure that both the front and the rear wheels are chocked.
d. Position the ENGINE RUN and ENGINE START switches on the engine
compartment remote control box to the OFF position.
e. Allow enough time for components to cool down prior to working in the engine
compartment.
P16-42
A/C And Coolant Lines Interference In The Main Evap Compartment
1.0
Description
This procedure outlines the steps to space out the condenser discharge and heater
coolant lines.
2.0
Material requirements
ITEM
1
2
3
3.0
PART NO
19-4-94
19-03-0737
19-01-1516
QTY
2
2
1
U/M
EA
EA
EA
DESCRIPTION
Clamp-Line Support,Neoprene Covered,53/64 ID
Nut-Flanged,3/8-16,GR8,STL
Capscrew-Flanged,3/8-16x1.25,Gr 8,Zn Pltd
Special tools
Aluminum foil tape.
4.0
Procedure
Remove the evaporator door in the Baggage Bay #3 compartment..
Remove and save
the evaporator door
Remove and save the bolt securing the LH HVAC blower duct.
Remove and save
the bolt
Motor Coach Industries Ltd.
Page 2 of 6
P16-42
A/C And Coolant Lines Interference In The Main Evap Compartment
Remove and discard the aluminum foil tape on the LH HVAC blower duct.
Remove and discard
the aluminum foil tape
Remove and save the 4 screws and washers securing the blower duct.
Remove and save the
screws and washers
Remove and save the 3 screws, washers and lock washers securing the LH blower.
Remove and save the screws,
lock washers and washers
Motor Coach Industries Ltd.
Page 3 of 6
P16-42
A/C And Coolant Lines Interference In The Main Evap Compartment
Move the blower duct to the left and rotate the blower cover to gain access to the
refrigerant tubes.
Move the blower duct
to the left
Rotate the blower cover
Install two p-clamps to the refrigerant tubes using bolt, MCI P/N: 19-01-1516, and nuts,
MCI P/N: 19-03-0737, as shown below.
Install P-clamps,
MCI P/N: 19-4-94
Nuts, MCI P/N:
19-03-0737
Bolt, MCI P/N: 1901-1516
Motor Coach Industries Ltd.
Page 4 of 6
P16-42
A/C And Coolant Lines Interference In The Main Evap Compartment
Rotate the blower cover and move the blower duct to the right.
Move the blower duct
to the right
Rotate the blower cover
Secure the LH blower using existing screws, washers and lock washers.
Secure the LH blower using
existing hardware
Motor Coach Industries Ltd.
Page 5 of 6
P16-42
A/C And Coolant Lines Interference In The Main Evap Compartment
Secure the blower duct using existing 4 screws and washers.
Secure the blower duct
using existing hardware
Install aluminum foil tape on the LH HVAC blower duct.
Install aluminum foil tape
Secure the blower duct using existing bolt.
Secure the blower duct
using existing hardware
End of the procedure
Motor Coach Industries Ltd.
Page 6 of 6