NHTSA ID Number: 10175879
Manufacturer Communication Number: LS Brake Mod.
TSB/Document Date: 2020-06-01
Summary
LiquidSpring brake line modification instructions for vehicles affected by LiquidSpring recall notice 20E031. Illustrates required processes for repairing affected vehicle rear braking system.
LiquidSpring® LLC
4899 E 400 S, LAFAYETTE, IN 47905
PH: 765-474-7816, FAX: 765-474-7826
www.liquidspring.com
Ram
4500/5500 Brake Line Modification
Description of issue:
Ram 2019-2020 4500/5500 vehicles equipped with a LiquidSpring rear suspension may have a
shortened brake hose(s) which could cause the hose to be taut, adversely contacting
suspension components and causing chafing on the brake hose(s).
Chassis Affected:
MY 2019-2020 Ram 4500/5500 Cab Chassis.
Suspension Kit and Serial Numbers Affected:
Kits: DS135RS3A, DS135RS3AF, DS135RS3-DM
S/N’s: 2010398-2013191
Kits: DS135RS2A, DS135RS2AF with conversion kits for 2019-2020 chassis.
S/N’s: 2007563-2012863
Component Identification:
Use the below pictures to identify if the modification is already performed.
Driver Side Brake Line – Original Factory
Banjo Mounting (Modification Required)
Driver Side Brake Line – Modified Banjo Mount
(Modification Performed)
Passenger Side Brake Line – Original Factory
Banjo Mounting (Modification Required)
Passenger Side Brake Line – Modified Banjo
Mount (Modification Performed
The information contained in this document is the sole property of LiquidSpring LLC. Any review,
retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by
persons or entities other than the intended recipient(s) is prohibited. Any reproduction in part or as a
whole without the written permission of LiquidSpring LLC is prohibited.
Page 1 of 4
D11848
Rev A
LiquidSpring® LLC
4899 E 400 S, LAFAYETTE, IN 47905
PH: 765-474-7816, FAX: 765-474-7826
www.liquidspring.com
If the brake line is identified as the Original Factory Banjo Mounting, the brake line mounting
must be modified with the Modified Banjo Block, Banjo Bolt, and New Crush Washers. Follow
modification instructions outlined below for installation of Modified Banjo Block for both Driver
and Passenger side.
Inspection Instructions:
Inspect the brake lines for any wear on the flexible brake line, See Figure 1. If any wear is
found on the brake line (not the protective spiral wrap), it must be replaced. Do not proceed
with above modification and contact LiquidSpring for additional kit P/N: 11871, to replace brake
line.
Figure 1: Area to inspect for wear on flexible brake line encircled
Modification Instructions:
NOTE: The following procedures should
be used in conjunction with OEM Hydraulic
Brake service instructions and procedures.
1.
2.
On the rear axle, locate the LH Rear
brake outer flexible hose.
Locate the two (2) banjo bolts, eight
(8) crush washers, and two (2)
banjo blocks included in kit, P/N
11849.
Figure 2: Supplied Banjo Blocks, Bolts, and
Crush Washers
Figure 3: Banjo Bolt & Washers to Remove
The information contained in this document is the sole property of LiquidSpring LLC. Any review,
retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by
persons or entities other than the intended recipient(s) is prohibited. Any reproduction in part or as a
whole without the written permission of LiquidSpring LLC is prohibited.
Page 2 of 4
D11848
Rev A
LiquidSpring® LLC
4899 E 400 S, LAFAYETTE, IN 47905
PH: 765-474-7816, FAX: 765-474-7826
www.liquidspring.com
3.
Remove the banjo bolt and crush
washers from the LH caliper and
only discard washers.
Note: Prop up brake line to minimize
fluid loss.
4.
Install the provided banjo block and
crush washers to the caliper using
retained banjo bolt from Step 3, See
Figure 4– Torque banjo bolt to 25
ft-lbs.
Figure 5: Installation of Driver Side OEM
Brake Line to Relocation Block
7.
Follow steps 2-4 for the RH side.
8.
Install the Passenger side OEM
brake banjo mounting with the
supplied crush washers and banjo
bolt to the banjo block. Orient as
shown in Figure 6. Note: Banjo
fitting must be oriented to provide
optimal clearance between flexible
hose and surrounding parts
9.
Torque banjo bolt to 25 ft-lbs.
Figure 4: Installation of Relocation Block
5.
Install the Driver side OEM brake
banjo mounting with the supplied
crush washer and banjo bolt to the
banjo block. Orient as shown in
Figure 5. Note: Banjo fitting may be
rotated to provide optimal clearance
between flexible hose and
surrounding parts
6.
Torque banjo bolt to 25 ft-lbs.
Figure 6: Installation of Passenger Side OEM
Brake Line to Relocation Block
The information contained in this document is the sole property of LiquidSpring LLC. Any review,
retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by
persons or entities other than the intended recipient(s) is prohibited. Any reproduction in part or as a
whole without the written permission of LiquidSpring LLC is prohibited.
Page 3 of 4
D11848
Rev A
LiquidSpring® LLC
4899 E 400 S, LAFAYETTE, IN 47905
PH: 765-474-7816, FAX: 765-474-7826
www.liquidspring.com
10. Bleed the brake system. Follow
OEM specified brake bleeding
procedure. Use Manufacturer
specified brake fluid as marked on
the vehicle reservoir cap.
NOTE: A pressure bleed system may be
used to simplify one-man operation. See
Figure 7.
Figure 7: An example of pressure bleed
system: Mityvac MV6840
Contact Information
The LiquidSpring contact information is:
Phone: 765-474-7816 – Dial #1 for Customer
Service
8:00 a.m. – 5:00 p.m.
Email: [email protected]
The information contained in this document is the sole property of LiquidSpring LLC. Any review,
retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by
persons or entities other than the intended recipient(s) is prohibited. Any reproduction in part or as a
whole without the written permission of LiquidSpring LLC is prohibited.
Page 4 of 4
D11848
Rev A
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TSB/Document ID: LS Brake Mod.
Replacement Service Bulletin Number:
MFR Communication Date: 2020-05-15
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SUSPENSION:REAR:SPRINGS
MFR Component System:
MFR Component Subsystem:
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