Kohler Command Pro CV980 - Manual (Page 26)

3.4
Section 3
Troubleshooting
Leakdown Test Results
’›ȱŽœŒŠ™’—ȱ›˜–ȱŒ›Š—”ŒŠœŽȱ‹›ŽŠ‘Ž› .......................................................’—œȱ˜›ȱŒ¢•’—Ž›ȱ ˜›—ǯ
’›ȱŽœŒŠ™’—ȱ›˜–ȱŽ¡‘Šžœȱœ¢œŽ– .............................................................ŽŽŒ’ŸŽȱŽ¡‘ŠžœȱŸŠ•ŸŽȦ’–™›˜™Ž›ȱœŽŠ’—ǯ
’›ȱŽœŒŠ™’—ȱ›˜–ȱŒŠ›‹ž›Ž˜› ......................................................................ŽŽŒ’ŸŽȱ’—Š”ŽȱŸŠ•ŸŽȦ’–™›˜™Ž›ȱœŽŠ’—ǯ
ŠžŽȱ›ŽŠ’—ȱ’—ȱȃ•˜ Ȅȱǻ›ŽŽ—Ǽȱ£˜—Ž ........................................................’œ˜—ȱ›’—œȱŠ—ȱŒ¢•’—Ž›ȱ’—ȱ˜˜
condition.
ŠžŽȱ›ŽŠ’—ȱ’—ȱȃ–˜Ž›ŠŽȄȱǻ¢Ž••˜ Ǽȱ£˜—Ž............................................Engine is still usable, but there is some
wear present. Customer should start
™•Š——’—ȱ˜›ȱ˜ŸŽ›‘Šž•ȱ˜›ȱ›Ž™•ŠŒŽ–Ž—ǯ
ŠžŽȱ›ŽŠ’—ȱ’—ȱȃ‘’‘Ȅȱǻ›ŽǼȱ£˜—Ž...........................................................’—œȱŠ—Ȧ˜›ȱŒ¢•’—Ž›ȱ‘ŠŸŽȱŒ˜—œ’Ž›Š‹•Ž
wear. Engine should be reconditioned or
replaced.
ȱ ȱ ȱ‘ŽȱĚ¢ ‘ŽŽ•ȱŽ—ȱ’œȱ–˜›ŽȱŠŒŒŽœœ’‹•ŽǰȱžœŽȱŠȱ
‹›ŽŠ”Ž›ȱ‹Š›ȱŠ—ȱœ˜Œ”Žȱ˜—ȱ‘ŽȱĚ¢ ‘ŽŽ•ȱ—žȦœŒ›Ž ȱ
˜ȱ‘˜•ȱ’ȱ’—ȱ™˜œ’’˜—ǯȱ—ȱŠœœ’œŠ—ȱ–Š¢ȱ‹Žȱ—ŽŽŽȱ
˜ȱ‘˜•ȱ‘Žȱ‹›ŽŠ”Ž›ȱ‹Š›ȱž›’—ȱŽœ’—ǯȱȱ‘Žȱ
Ž—’—Žȱ’œȱ–˜ž—Žȱ’—ȱŠȱ™’ŽŒŽȱ˜ȱŽšž’™–Ž—ǰȱ’ȱ–Š¢ȱ
‹Žȱ™˜œœ’‹•Žȱ˜ȱ‘˜•ȱ’ȱ‹¢ȱŒ•Š–™’—ȱ˜›ȱ Ž’—ȱŠȱ
›’ŸŽ—ȱŒ˜–™˜—Ž—ǯȱžœȱ‹ŽȱŒŽ›Š’—ȱ‘Šȱ‘ŽȱŽ—’—Žȱ
ŒŠ——˜ȱ›˜ŠŽȱ˜ěȱ˜ȱȱ’—ȱŽ’‘Ž›ȱ’›ŽŒ’˜—ǯ
4. Install the adapter into the spark plug hole, but
˜ȱ—˜ȱŠĴŠŒ‘ȱ’ȱ˜ȱ‘ŽȱŽœŽ›ȱŠȱ‘’œȱ’–Žǯ
ȱ śǯȱ ˜——ŽŒȱŠ—ȱŠ’›ȱœ˜ž›ŒŽȱ˜ȱŠȱ•ŽŠœȱśŖȱ™œ’ȱ˜ȱ‘Žȱ
tester.
6. Turn the regulator knob in the increase direction
ǻŒ•˜Œ” ’œŽǼȱž—’•ȱ‘ŽȱŠžŽȱ—ŽŽ•Žȱ’œȱ’—ȱ‘Žȱ¢Ž••˜ ȱ
ȃœŽȄȱŠ›ŽŠȱŠȱ‘Žȱ•˜ ȱŽ—ȱ˜ȱ‘ŽȱœŒŠ•Žǯ
7. Connect the tester quick-disconnect to the adapter
‘˜œŽȱ ‘’•Žȱꛖ•¢ȱ‘˜•’—ȱ‘ŽȱŽ—’—ŽȱŠȱǯȱ
˜Žȱ‘ŽȱŠžŽȱ›ŽŠ’—ȱŠ—ȱ•’œŽ—ȱ˜›ȱŽœŒŠ™’—ȱ
air at the carburetor intake, exhaust outlet, and
crankcase breather.
ȱ Şǯȱ ‘ŽŒ”ȱ‘ŽȱŽœȱ›Žœž•œȱŠŠ’—œȱ‘Žȱ˜••˜ ’—ȱŠ‹•ŽDZ
Compression Test
ȱŒ˜–™›Žœœ’˜—ȱŽœȱ’œȱ‹Žœȱ™Ž›˜›–Žȱ˜—ȱŠȱ Š›–ȱ
Ž—’—Žǯȱ•ŽŠ—ȱŠ—¢ȱ’›ȱ˜›ȱŽ‹›’œȱŠ Š¢ȱ›˜–ȱ‘Žȱ‹ŠœŽȱ
˜ȱ‘Žȱœ™Š›”ȱ™•žœȱ‹Ž˜›Žȱ›Ž–˜Ÿ’—ȱ‘Ž–ǯȱŽȱœž›Žȱ
‘ŽȱŒ‘˜”Žȱ’œȱ˜ěǰȱŠ—ȱ‘Žȱ‘›˜Ĵ•Žȱ’œȱ ’Žȱ˜™Ž—ȱž›’—ȱ
the test. Compression should be at least 160 psi and
œ‘˜ž•ȱ—˜ȱŸŠ›¢ȱ–˜›Žȱ‘Š—ȱŗśƖȱ‹Ž ŽŽ—ȱŒ¢•’—Ž›œǯ
Cylinder Leakdown Test
ȱŒ¢•’—Ž›ȱ•ŽŠ”˜ —ȱŽœȱŒŠ—ȱ‹ŽȱŠȱŸŠ•žŠ‹•ŽȱŠ•Ž›—Š’ŸŽȱ
˜ȱŠȱŒ˜–™›Žœœ’˜—ȱŽœǯȱ¢ȱ™›Žœœž›’£’—ȱ‘ŽȱŒ˜–‹žœ’˜—ȱ
Œ‘Š–‹Ž›ȱ›˜–ȱŠ—ȱŽ¡Ž›—Š•ȱŠ’›ȱœ˜ž›ŒŽǰȱ¢˜žȱŒŠ—ȱ
ŽŽ›–’—Žȱ’ȱ‘ŽȱŸŠ•ŸŽœȱ˜›ȱ›’—œȱŠ›Žȱ•ŽŠ”’—ȱŠ—ȱ‘˜ ȱ
‹Š•¢ǯ
‘Žȱ¢•’—Ž›ȱŽŠ”˜ —ȱŽœŽ›ȱ’œȱŠȱ›Ž•Š’ŸŽ•¢ȱœ’–™•Žǰȱ
’—Ž¡™Ž—œ’ŸŽȱ•ŽŠ”˜ —ȱŽœŽ›ȱ˜›ȱœ–Š••ȱŽ—’—Žœǯȱ‘Žȱ
ŽœŽ›ȱ’—Œ•žŽœȱŠȱšž’Œ”ȱ’œŒ˜——ŽŒȱ˜›ȱŠĴŠŒ‘’—ȱ‘Žȱ
adapter hose, and a holding tool.
Leakdown Test Instructions
ȱ ŗǯȱ ž—ȱ‘ŽȱŽ—’—Žȱ˜›ȱřȬśȱ–’—žŽœȱ˜ȱ Š›–ȱ’ȱž™ǯ
ȱ Řǯȱ Ž–˜ŸŽȱ‘Žȱœ™Š›”ȱ™•žǻœǼȱŠ—ȱ‘ŽȱŠ’›ȱꕝŽ›ȱ›˜–ȱ
engine.
ȱ řǯȱ ˜ŠŽȱ‘ŽȱŒ›Š—”œ‘ŠĞȱž—’•ȱ‘Žȱ™’œ˜—ȱǻ˜ȱ
Œ¢•’—Ž›ȱ‹Ž’—ȱŽœŽǼȱ’œȱŠȱ˜™ȱŽŠȱŒŽ—Ž›ȱ˜ȱ
the compression stroke. Hold the engine in this
position while testing. The holding tool supplied
’‘ȱ‘ŽȱŽœŽ›ȱŒŠ—ȱ‹ŽȱžœŽȱ’ȱ‘ŽȱȱŽ—ȱ˜ȱ
‘ŽȱŒ›Š—”œ‘ŠĞȱ’œȱŠŒŒŽœœ’‹•Žǯȱ˜Œ”ȱ‘Žȱ‘˜•’—ȱ
˜˜•ȱ˜—˜ȱ‘ŽȱŒ›Š—”œ‘ŠĞǯȱ—œŠ••ȱŠȱřȦŞȈȱ‹›ŽŠ”Ž›ȱ
‹Š›ȱ’—˜ȱ‘Žȱ‘˜•ŽȦœ•˜ȱ˜ȱ‘Žȱ‘˜•’—ȱ˜˜•ǰȱœ˜ȱ’ȱ
is perpendicular to both the holding tool and
Œ›Š—”œ‘ŠĞȱǯȱ