Dodge Nitro. Manual - part 359

Fig. 23: Removing Caliper Piston - Typical 
Courtesy of CHRYSLER LLC 

4. Remove caliper piston (2) with short bursts of low pressure compressed air. Direct air through fluid inlet 

port and ease piston out of bore. 

CAUTION: Do not blow the piston out of the bore with sustained air pressure. 

This could result in a cracked piston. Use only enough air pressure 
to ease the piston out.

WARNING:

Never attempt to catch the piston as it leaves the bore. This may 

 

2007 Dodge Nitro R/T 

2007 BRAKES Base - Service Information - Nitro

  

Fig. 24: Removing Caliper Piston Dust Boot - Typical 
Courtesy of CHRYSLER LLC 

5. Remove caliper piston dust boot with suitable pry tool (1). 

result in personal injury.

 

2007 Dodge Nitro R/T 

2007 BRAKES Base - Service Information - Nitro

  

Fig. 25: Removing Caliper Piston Seal - Typical 
Courtesy of CHRYSLER LLC 

6. Remove caliper piston seal with wood or plastic tool (1). Do not use metal tools as they will scratch 

piston bore. 

 

2007 Dodge Nitro R/T 

2007 BRAKES Base - Service Information - Nitro

  

Fig. 26: Removing Caliper Mounting Bolt Bushings And Boots 
Courtesy of CHRYSLER LLC 

7. Remove caliper mounting bolt bushings (1) and boots (2).  

CLEANING 

DISC BRAKE CALIPER 

Clean the caliper components with clean brake fluid or brake clean only. Wipe the caliper and piston dry with 
lint free towels or use low pressure compressed air. 

INSPECTION 

DISC BRAKE CALIPER 

The piston is made from a phenolic resin (plastic material) and should be smooth and clean. 

The piston must be replaced if cracked or scored. Do not attempt to restore a scored piston surface by sanding 
or polishing. 

The bore can be lightly polished with a brake hone to remove very minor surface imperfections. See Fig. 27. 

CAUTION: Do not use gasoline, kerosene, thinner, or similar solvents. These 

products may leave a residue that could damage the piston and seal.

CAUTION: If the caliper piston is replaced, install the same type of piston in the 

caliper. Never interchange phenolic resin and steel caliper pistons. The 
pistons, seals, seal grooves, caliper bore and piston tolerances are 
different.

 

2007 Dodge Nitro R/T 

2007 BRAKES Base - Service Information - Nitro