Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

How to change the Oil Pump gear? It seems stuck in my Splendor. Would the Oil Pump needs to be dismantled for this? Tools required ? Please enumerate.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Passion pro has clocked 100,000 kms and still going strong. Did the service myself last sunday (June 21). List of works carried out in service.

• Engine oil changed. Veedol take off 4t 10w 30. Rs.290
• Spark plug replaced. Champion. Rs. 75
• Air filter replaced. Rs. 162
• Water wash. Rs 100.
• Lubed the chain with gear oil and grease.
• Adjusted the clutch play
• Fixed the rear lamp which was not working

Total cost Rs. 627. I am not able to attach the pictures. Will do that later.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Crank noise will seldom occur at idle , it can be heard when the engine is under load . Also tappet noise occur when engine is hot , usually not at startup . So probably it's nothing or the timing chain . If you do the timing chain - replace whole kit .
Stop worrying about oil grade - as long as it gets ANY oil of ANY grade crank will be fine , all the other parts shall be fine too . But oil level & circulation is worth worrying - for that the centrifugal & mesh filter cleaning is must at once - after which with timely oil changes they'll be fine for years and years . Get tappets adjusted once too , any mechanic can do it in 10 mins . If the recommended oil for the bike was 20w40 when purchased , stick to it - no problem , just check the oil level once in a while and maintain correct levels .

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For all -

Beware that this happens between the tank & seat . I had taken all precautions and even replaced the OE protective-film once , but ten years is a long time . This has potential to destroy your fuel-tank .
This is after the protective film-sticker was removed and all rust/residue thoroughly cleaned with wd40 .




further rusty spots scraped out with a wood-chisel , wiped with petrol and thin film of lead-oxide primer applied and set aside to dry for 2 days ( taking advantage of lockdown ) . will apply black enamel paint and dry again afterwards . then use a new protective film plus stips of inner-tube rubber before putting the seat back on . Any other ideas ?




Update 31.05.2020 :

After the paint dried , new OE protective sticker applied



Additionally a patch made of inner-tube affixed to the tank-bolt to prevent any further abrasion between seat & tank

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

I am afraid, you may have to change complete timing kit. Exact same things had happened with my Passion Pro. I took out the tensioner for inspecting and found the rubber to be worn out. Replaced the rubber, elongated the spring and put the tensioner back. But the sound increased horribly. I made a serious mistake by elongating the spring as it increases it's diameter and hinders the working of the tensioner. In the end, I had to replace timing chain and tensioner both. Timing chain kit is available which contains timing chain, roller, oil pump gear and tensioner spring and it costs 500rs. The tensioner is separate and costs 90rs.

Since yours is an old model Splendor and you've used 20w40 grade for most of it's life, it would be better to continue using the same. It won't completely eradicate crank noise but will dampen it to a great extent. Also it's the recommended grade for your Splendor. My Passion Pro has 10w30 recommended grade but I've used 20w40 from about 20k to 90k kms on the odo because it gives much better NVH levels. And when I switched back to 10w30 again at around 90k, the crank started developing noise. Now I am again using 20w40 and the crank noise has substantially reduced. Hero and almost all others are recommending 10w30 grade for better cold starts which in turn ensures overall better engine life. But at the compromise of overall refinement & top end power.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Hello Everyone,
In this lockdown period, today I tried firing up my Dad's Splendor. What i found was quite shocking. After starting there was some tik-tik noise from the magnet cover, which after the engine warmed up vanished. I believe that this was indeed the crank noise. The bike was regularly serviced but till date the centrifugal filter nor the oil filter has been cleaned, neither have the valves been adjusted. It has done around 47,000 kms till date and is 17 years old. Now that noise from crank has really got me worried. I wonder if there is any problem. But maybe it was due to the fact that the bike was standing on the side stand for quite a while and all the oil drained out from the bearings. Second reason I suspect is the oil. Hero Honda used to recommend 20w40 for this engine back in the days but these service centers irrespective of the model year have used 10w30 in all bikes.Could this lead to increases clearance in the crank due to enhanced wear and tear? I did the last oil change myself and poured in 10w40 Mobil Super Moto(Semi Synthetic).
Another concern was that there was noise from the timing chain which was present even when the engine warmed up. So decided to pull out the cam chain tensioner and see what's going on with that. To my surprise this is what I found .



The rubber on the top of the cam chain tensioner had this indent.



Whereas the tensioner itself had significant cracks. These cracks were not due to metal fatigue but it seemed like the top layer of the metal had eroded. Although the tensioner itself was fine and was holding the pressure nicely but still should I be replacing it?
After the spring was elongated and and placed back in the bike even then the cam chain noise didn't disappear. I'm guessing that the cam chain is now asking for a replacement. Also should I be replacing the oil pump gear since that is very much prone to failing on these bikes.

Thanks.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

I am in mental block due to these things.Daily office in this crisis and can't visit home in weekends due to restrictions.

But hell what to do.Slowly getting depressing.


Yes, these engines are completely new and built in house by hero.

The new 110cc engine is actually as 112 cc than older 109 cc.

This was done as the older engine had some complains by customers.

And the new engines are hell lot smoother.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Welcome back sir. I hope the govt will ease some lockdown restrictions and allow inter-district travelling.

By the way, I saw a BS6 Passion Pro in flesh. It has no resemblance to both Passion pro 100 & BS4 Passion pro 110. Engine & chassis are completely new and it feels well made. The bike feels a lot like Honda Shine. Even exhaust note is similar to the Shine. Seems like Hero has grown up as an independent manufacturer.

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The new 125cc-5 speed mill



The 110cc mill


External oil filter!



Diamond frame



Engine crawl mode ( anti-stall )



​And off course the national engine, now fuel injected.



The new engines look clean and sound very Honda-esque. Didn't expect any of this from Hero. I'll reserve my opinion until I get to ride one.

Image source- Hero Motocorp official website

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Finally back to this thread. Due to some personal issue couldn't be active. Moreover i logged in using a wrong id and wondered why i was not allowed to post. Until our mod [MENTION=47074]Divya[/MENTION]sharan pointed it to me over whats-app chat. Have been seeing this group picking up steam from some time.

Joy is now at 4.25 lacs km. Due to lock-down i am stuck at workplace and joy is at home. Can't go to home as its in another district. May be inter district travel over private vehicle resumes for emergency workers like us.

Missing joy in life(pun intended), and also missing parents.


Lots of discussion now going on in group.

Will see the discussions and reply when i have gone over all posts that i have missed.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Exactly. I changed timing chain kit and it runs silent. Old chain was slightly longer.

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Yes. Oil comes out as I opened inlet tapet cover. Now my problem is solved

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

After installing timing chain kit, Check the tappets . Aslo check the oil flow to cylinder head .

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Right. I should have changed timing chain kit completely. I shall change whole timing chain kit and post result tomorrow

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Usually in this type of problem the timing-chain , it's guide roller , tensioner rod spring & the rubber tip & arm are also damaged . This is why replacement comes as a kit ( 22K130LS ), although the parts are also available seperately . Check that the rotor-filter / mesh-filter are clean , because if some of the debris got there , oil flow may be obstructed causing noisy engine , but of-course the main suspect is the timing chain .

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Thank you Pinaki for supporting.
Pump shaft is free and I also opened oil pump, it seems fine. Metal debris were accumulated around tensioner and broken sproket. I cleaned it and put everything back with new sprocket gear.
crank bearing and side bearings seems fine. Feels no difference in pickup and no abnormal vibrations
Sound is still from left side.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

The plastic center of the oil-pump-sprocket seems to have sheared off , maybe the oil-pump itself is jammed so the shaft cannot turn ? Did you check that the shaft is free ? oil-pump is functional ?
Two more questions comes to mind 1) where did all the sheared off metal and plastic bits of that sprocket go ? 2) what happened to the crank and other parts when oil-pump wasn't working ? I am afraid that you have to check everything .

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

I was hearing some strange noise from left side of engine (passion pro). I opened left side crank oil separator plate and saw this


I replaced this broken oil pump sprocket with new one. But I am still hearing almost same sound. Any idea? Please let me know what to do now. Thanks