DRESSTA TD-25M EXTRA, Service Manual

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SECTION 14
SUSPENSION
Page 14
TD-25M EXTRA DRESSTA
FRONT IDLER
Fig. 14.17. Idler Shaft End Clearance
6. Use only SAE 30 engine oil or equivalent (refer to OPERATOR’S MANUAL) to lubricate front
idlers. Insert lubricator nozzle all way into shaft until it enters small fill hole in center of shaft.
Pump lubricant in until air is forced out and lubricant back flows freely out plug hole in shaft.
Then quickly remove lubricator nozzle and torque lubrication plug to 20 - 50 [Nm]. Before
installing the plug (10), apply LOCTITE #592 to the plug threads. When reusing a pipe plug,
clean the plug before applying new LOCTITE to assure a tight seal.
NOTE: When reassembling front idler to blocks and fork, drain plug must be facing to outside and
roll pin to the inside.
7. Coat bores of mounting blocks (2 and 5, Fig. 14.12) with grease. Install the dowel pin
(3) into front idler shaft. Install blocks onto idler shaft and secure with fork (1) and hardware.
Torque fork bolts to 730 [Nm].
11. INSTALLATION
1. Lubricate the guides inside track frame.
2. Using a hoist and sling position front idler and fork onto guide bars up against adjuster cylinder.
3. Tighten the relief valve (1, Fig. 14.11) to 68 [Nm].
4. Install the front idler covers (1, Fig. 14.10) to the track frame (2).
5. Install the track chain (3), refer to SECTION 15.
6. Adjust the track chain tension, refer to the ADJUSTING TRACK TENSION in SECTION 15.
HYDRAULIC TRACK ADJUSTER
12. DESCRIPTION
The hydraulic track adjuster is supported between the track spring front seat and rear of the front
idler fork. Lubricant is introduced into the cylinder by the use of a lubrication fitting on top of the
cylinder. This lubricant acting upon the piston and adjusting rod forces the idler fork and idler
forward for track chain adjustment.