Liangzi Power UTV1000-3, Руководство по обслуживанию

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3.ENGINE
3- 43
PISTON RINGS
Ring Removal
Remove the piston (see PISTON in this
subsection).
Ring Inspection
Ring/Piston Groove Clearance
Using a feeler gauge measure each ring/piston
groove clearance . If the clearance is too large, the
piston and the piston rings should be replaced.
RING END GAP
UPPER COMPRESSION RING
NEW 0.03mm to 0.07mm
(.0012in to.0028in)
SERVICE LIMIT 0.150mm(.0059in)
LOWER COMPRESSION RING
NEW 0.02 mm to 0.06mm
(.0008in to.0024in)
SERVICE LIMIT 0.150mm(.0059in)
OIL SCRAPER RING
NEW 0.01 mm to 0.18mm
(.0004in to.0071 in)
SERVICE LIMIT 0.250mm(.0098in)
1. Piston
2. Feeler gauge
Ring End Gap
RING/PISTON GR00VE CLEARANCE
UPPER COMPRESSION RING
NEW 0.20 mm to 0.40 mm
(.008in to.016in)
SERVICE LIMIT 0.60 mm(.024in)
LOWER COMPRESSION RING
NEW 0.20 mm to 0.40mm
(.008in to.016in)
SERVICE LIMIT 0.70 mm(.028 in)
OIL SCRAPER RING
NEW 0.20 mm to 0.70mm
(.008in to.028in)
SERVICE LIMIT 1 .00 mm(.039in)
To measure the ring end gap place the ring in the
cylinder in the area of 8mmto16mm (5/16in
to5/8in) from top of cylinder.
NOTE: In order to correctly position the ring in the
cylinder, use piston as a pusher.
Using a feeler gauge, check ring end gap. Replace
ring if gap exceeds above described specified
tolerance.
Ring Installation
For installation, reverse the removal procedure.
Pay attention to the following details.
NOTE: Use a ring expander to prevent breakage
during installation. The oil ring must be installed
by hand.
NOTE: First install spring and then rings of oil
scraper ring.
Install the oil scraper ring first, then the lower
compression ring with the word “N” and “TOP”
facing up, then the upper compression ring with
the word “N” and “TOP” facing up.