350 NCR Ti service video

Marzocchi 350NCR lower leg service

A lower leg service is easy to do and will keep the 350NCR working in top condition.

It is important to remove the air tube on this model for ease of assembly plus the dummy rod will require greasing.

1/ Remove air valve cover and expel air from the fork

2/ Using a 27mm socket remove the air plug and pull out the air tube

3/ Using a 1.5mm hex key remove the rebound adjuster

4/ Using a 12mm socket remover the damper leg foot nut

5/ Using a 5mm hex key remove the air side foot nut

6/ Separate the CSU form the lowers

7/ Clean the lower leg and re-grease the seals

8/ Turn the CSU upside down and remove the cir-clip that retains the rod on the air side

9/ Remove rod and clean

10/ Re-grease the rod and replace it in to the stanchion

11/ Re-fit the retaining cir-clip and test the rod to make sure the cir-clip is correctly seated

12/ Carefully re-fit the CSU in to the lowers making sure you don’t snag the oil seals

13/ Using a 5mm hex key re-fit air side foot nut and torque to 11NM

14/ Invert the fork

15/ Grease the air tube
16/ Pour 15cc of SAE 7.5 oil inside the air tube

17/ Re-fit the air tube

18/ Tighten air plug to 11NM

19/ Using a syringe squirt 15cc of SAE 7.5w oil in to the DBC leg via the foot nut hole

20/ Using a 12mm socket re-fit the DBC foot nut and torque to 11NM

21/ Using a 1.5mm hex key re-fit the rebound adjuster

22/ Inflate to desired pressure

Service guide: TST5 cartridge (with bladder)

Service for the TST 5 cartridge with bladder

General Tools

2.5mm hex wrench

10mm spanner
O-ring for trapping oil in the bladder.

Bleeding Instructions

1/ Remove the cartridge from fork

2/ Remove the TST adjuster using a 2.5mm hex wrench

3/ Remove cir-clip

4/ **** Using a 10mm spanner remove compression valve assembly (42). Use a rotating motion so not to damage the O rings. Alternate version uses a 23mm spanner, see bellow

5/ Pour our waste oil and clean and inspect all components

6/ Re-fill the cartridge using SAE 7.5w oil - cycling the damper rod to expel the air

7/ Fill to the very top and re-install the compression valve using a rotating motion, again not to damage the o-rings.

8a/ For models with an 8mm damper shaft

Compress the damper rod so that the exposed rod measures 160mm to the red nut

8b/ For models with an 10mm damper shaft (Marathon Race)

Compress the damper rod so that the exposed rod measures 80mm to the red nut

9/ Using an O-ring roughly the size of the damper, slide down from the top of the cartridge to   halfway down the bladder so the oil is trapped in the bladder bellow the O-ring.

10/ Using a 10mm spanner remove compression valve assembly. Use a rotating motion so not to damage the O rings

11/ Extend the lower damper rod fully

12/ Top up the cartridge using SAE 7.5w oil

13/ Re-install the compression valve using a rotating motion

14/ Remove the bleeding O-ring

15/ Test - make sure there is a film of oil under the bladder to ensure lock-out

**** NOTE: There are two types of TST5 cartridge tops, please take note to which one you have.