mmccutchin

I'm not sure how many Forum readers have first generation (1990-1995) LS400 models. . .or if it really matters.

Could you recommend an "ideal" maintenance schedule? I've started one. . .see below. . .based on some information from a local independent who's been servicing Toyotas and Lexuses for years.

BTW. . .not to get into any unnecessary debates or controversies here. . .please assume the following, when commenting on an "ideal" schedule:

*Some owners (like me!) are not very mechanical. . .so they may be better off following a schedule so as to check in with a dealer (or independent, friend who "knows") to see if something needs to be maintained or replaced;

*T-Belt and W-Pump replacement based on #miles (or years) versus actual need (there is a separate thread on this topic. . .and both sides are represented. . .I'm one of those Japanese car and Lexus owners who has never had extraordinary luck with T-belts and W-pumps.)

Here's a "partial" list - please add or modify:


1. Timing belt replacement (70-80K or every 7 year)

2. Drain and refill using recommended coolant (30K or every 2 year)

3. Auto transmission fluids drain and refill (DEXRON II & III) (15K or 1 year) -OR-
auto transmission fluids drain and refill (TYPE T-IV) (15K or every 1 year)

4. Manual transmission fluids drain and refill (GL-5 type or 10W-30) (30K or every 2 year)

5. Brake hydraulic system fluids flush (1 quart) (30K or every 2 year)

6. Clutch hydraulic system fluids flush (1 quart) (30K or every 2 year)

7. Power steering system fluids flush (4 quarts) (30K or every 2 year)

8. Air intake throttle body clean (1/2 can) (15K or 1 year)

9. Differential fluids drain and refill (30K or every 2 year)

10. Front brake replacement (45K or every 3 year) -or- Rear brake replacement (60K or every 5 year)

11. Engine valves adjustment (60K or every 4 year)

12. Engine tune-up (60K or every 4 year)

Thank you in advance!

damon

I would add flush & refill Power Steering Fluid to this list and do so every 30,000.

Nothing easier than a drain & refill of Tranny Fluid on a 400. It is easier than an oil change.
Take off bolt 1 quart comes out, put 1 quart back in the top. Do this often enough & you do not need an expensive flush.

I come across somehow as anti-maintenance when it comes to TB yet when I did mine I replaced more parts than most when the engine was in a disassembled state.

I drove mine to 168,000 & did the following maintenance when the fan bracket support bearing failed. Had most of these parts as a kit in my trunk.

I'm at 178,000 now & headed for 300,000 plus! This cost was $400 plus parts from a mechanic friend.

----------------------------------------------------------------------
Timing Belt replaced:
Got real serious here & replaced a slew of parts while the engine was "torn-down" so to speak.
13568-59045 Timing Belt
13540-50030 Tensioner
13503-0f010 Idler Bearing Left
13505-50022 Idler Bearing Right
Front Cover Gaskets
11319-50010
11329-50010
11346-50010
11347-50010 2 Total
11357-50010
90311-A0001 Front Crank Seal
90311-38036 Cam seals ( 2 Total )
Cooling:
16100-50022 Water Pump
90916-03084 Thermostat
16325-62010 Water Inlet, Gasket
16571-50021 Upper Radiator Hose
71538 Lower Radiator Hose (Dayco Part #)
Hayden Fan Clutch #2656
16307-50011 Bracket Support for Fan
Accessories:
Alternator Parts
90099-10192 Front Alt. Bearing
90099-10194 Rear Alt. Bearing
27370-75060 Brush & Holder


5060885 Serpentine Belt (Dayco Part #)
89255 Tensioner (Dayco Part #) (This part was modified)
89026 Pulley (Dayco Part #)
Drive Belt Pulley Bearing NTN 63011LL (A&W Bearing)
Electrical
19101-50020 Dist. Cap X 2
19102-50020 Rotor X 2
Spark Plugs
BKR6EIX-11 X 8
All items between these lines were part of TB maintenance.

RA40

iTrader: (6)

Some past discussions to add furtehr info on this:

https://www.clublexus.com/forums/sho...nance+schedule

https://www.clublexus.com/forums/sho...nance+schedule

https://www.clublexus.com/forums/sho...nance+schedule

GRAND_LS 4

iTrader: (2)

Unless the first gen is different, two quarts are drained, and 2 are added.

Pagong

Where do we get the "right" coolant for the LS4's? and same with the tranny fluid..

GRAND_LS 4

iTrader: (2)

Toyota/Lexus dealer.

RA40

iTrader: (6)

While other coolants are "compatible" the dealer will have the appropriate one and now pre-mixed and ready to go. Type IV tranny fluid again from dealer. Get both these from a Toyota shop, not Lexus though. You'll save just a wee bit.

Pagong

Thanks...

I was going to do the coolant flush and do the tranny fluid change, but its getting really cold out. So I might have my regular independent shop do it for me this time.

Tammy

But purchase the coolant at Toyota...